A52FeaturesSpecificationsDownloadsReviewsPhotos Circuitry designed by legendary John Curl THX Ultra2 certified High bias Class A/AB operation Balanced inputs with discrete circuits and XLR connectors Direct Coupled - no capacitors or inductors in signal path Complementary MOSFET driver stage and JFET input stage 20 beta-matched 15 amp, 60 MHz bipolar output transistors 1.4 kVA encapsulated toroid power transformer with independent secondary windings for each channel 100,000 ?F power supply filter capacitance DC Servo and relay protection circuits AC present, channel status, high temperature indicators Heavy-duty 24k gold-plated 5-way speaker terminals Gold-plated RCA input jacks; ground lift switch Auto turn-on by 12v trigger or audio signal, 12v trigger out

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Parasound Halo A 51 5-Channel Power Amplifier Product SKU: 72119 Input Voltage: 120V # of Owners: 1 Service History: None Serial Number: 50225 Age: 3 years Tobacco Exposure: No MSRP: $5749 Cosmetic Description: Excellent condition with no notable blemishes. What is Included: Amplifier, Manual, Power cable, Factory packaging Other Notes: While its asking price is far from cost no object, its performance is on par with the best, mating a beautiful midrange and non-fatiguing top end to a lively and punchy bass section that, while not the deepest-plunging, is one of the most musical Ive encountered in a long while. With reputation and reliability in tow, the Parasound A51 is a stunner in almost every regard. - Andrew Robinson, Home Theater Review Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Cost to ship this item within the contiguous United States is a flat rate of $135- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery. Your online source for the best value in new and used audio gear. Visit us online to Buy / Sell / Trade / Consign The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period. We specialize in well-cared for, previously used gear because that is what we are passionate about. We feel that there is nothing more fulfilling than creating a high-performance system on a budget with carefully selected used components, speakers and cables. Our program is safe, secure, fast, fair, hassle-free and highly effective. Visit us online to Buy / Sell / Trade / Consign Buy: Are you looking to get a fair price for your used home audio equipment without all the hassles, headaches, risks and fees? We will appraise your equipment and make you a quick, easy, fair cash offer. Just fill out our “get a quote” form on our homepage to start the process. Sell: We sell in multiple online venues with many (but not all) of our products available in our eBay store. Everything is quality-assured and backed by our best-in-class, satisfaction-guaranteed return policy. Trade: Make your budget go further with a generous trade-in allowance. Let us know what you have available, and we’ll get you the best possible trade-in allowance. We can even assist with shipping & logistics from anywhere in the USA. Just fill out our “get a quote” form on our homepage to start the process. Consign: We offer a hassle-free way for individuals and businesses to liquidate used gear. We’ll handle every step of the process from shipping to appraisals, customer service, fulfillment, and returns: Industry-low rates with no hidden fees Leverage our world-class reputation and get exposure in multiple sales venues - putting your product in front of over 570k monthly shoppers. Our program is Safe, Secure, Fast, Fair, Hassle-Free and Highly Effective. With 100% feedback ratings in every venue in which we sell, you can rest assured that we’ve got your back. Visit us online to Buy / Sell / Trade / Consign Quality Assurance: We offer 15-20 new product listings for sale daily. Each product undergoes an extremely rigorous quality-assurance and listening session by one of our qualified technicians. We understand that buying used audio equipment can be rife with uncertainty and unexpected headaches. Our quality assurance program is informed by a knowledge-base built through delivering over 30,000 used audio products to satisfied customers. We promise to deliver your product in good working order - exactly as described 100% of the time. Support: We don’t just make promises. We stand behind them - your satisfaction is guaranteed. Our support team is ready to help you with any questions you might have before and after the sale. Value: In the never-ending pursuit of high performance, it’s important to stretch your limited budget as far as possible. Used equipment sells for a fraction of new prices, and with a partner like The Music Room you can upgrade any time you like and get most of your money back. There’s simply no better way to maximize a limited audio budget. Packaging: We’ve invested thousands of dollars and countless hours into mastering our state-of-the-art packaging process. Our custom foam-in-place packaging system allows us to safely package almost any item regardless of irregular shapes or sizes. Most importantly, this system provides our customers with a re-usable shipping box which increases the resale value of the product and provides a shipping method for easy, secure returns. Be seen by over 70,000 monthly visitors. Visit us online to Buy / Sell / Trade / Consign Payment: Prompt payment is expected. Paypal is preferred but all forms of payment are accepted. Unpaid item case will be opened after 3 days if no payment received. Shipping Times: Most Domestic orders ship within 1 business day of purchase. For International orders or freight shipments, please allow 2-3 business days. In all cases, tracking information will be emailed to you at the moment the shipping label is created. If you cant find it or have other questions about shipping & logistics, please contact us. Shipping Costs: Flat rate shipping costs are applicable within the contiguous 48 States (USA). These rates are clearly posted on each product page. For an International or custom quote (including Hawaii, PR, AK) please contact us. Returns: Every purchase made on eBay carries a 30-day, satisfaction-guaranteed return policy. If youre not happy with your purchase for any reason or if youve simply changed your mind... no problem. Simply ship it back for a full refund or exchange (minus S&H costs). If you have received an item that is defective in some way, we will make it right. Let us know - we will pay for return shipping and repair the item or refund 100% of your original purchase price.

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Parasound Halo A 51 5-Channel Power Amplifier Product SKU: 69992 Input Voltage: 120V # of Owners: 1 Service History: None Serial Number: 03445 Age: Unknown Tobacco Exposure: No MSRP: $5749 Cosmetic Description: Very good condition with minimal visible cosmetic wear including a few nicks on the top back edge of the chassis toward the left corner, and a small indentation on the top edge of the back left heatsink fin. These blemishes are not readily visible from your listening position, and do not detract from the overall wonderful appearance. What is Included: Amplifier, Power cable Other Notes: While its asking price is far from cost no object, its performance is on par with the best, mating a beautiful midrange and non-fatiguing top end to a lively and punchy bass section that, while not the deepest-plunging, is one of the most musical Ive encountered in a long while. With reputation and reliability in tow, the Parasound A51 is a stunner in almost every regard. - Andrew Robinson, Home Theater Review Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Cost to ship this item within the contiguous United States is a flat rate of $99- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery. Your online source for the best value in new and used audio gear. Visit us online to Buy / Sell / Trade / Consign The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period. We specialize in well-cared for, previously used gear because that is what we are passionate about. We feel that there is nothing more fulfilling than creating a high-performance system on a budget with carefully selected used components, speakers and cables. Our program is safe, secure, fast, fair, hassle-free and highly effective. Visit us online to Buy / Sell / Trade / Consign Buy: Are you looking to get a fair price for your used home audio equipment without all the hassles, headaches, risks and fees? We will appraise your equipment and make you a quick, easy, fair cash offer. Just fill out our “get a quote” form on our homepage to start the process. Sell: We sell in multiple online venues with many (but not all) of our products available in our eBay store. Everything is quality-assured and backed by our best-in-class, satisfaction-guaranteed return policy. Trade: Make your budget go further with a generous trade-in allowance. Let us know what you have available, and we’ll get you the best possible trade-in allowance. We can even assist with shipping & logistics from anywhere in the USA. Just fill out our “get a quote” form on our homepage to start the process. Consign: We offer a hassle-free way for individuals and businesses to liquidate used gear. We’ll handle every step of the process from shipping to appraisals, customer service, fulfillment, and returns: Industry-low rates with no hidden fees Leverage our world-class reputation and get exposure in multiple sales venues - putting your product in front of over 570k monthly shoppers. Our program is Safe, Secure, Fast, Fair, Hassle-Free and Highly Effective. With 100% feedback ratings in every venue in which we sell, you can rest assured that we’ve got your back. Visit us online to Buy / Sell / Trade / Consign Quality Assurance: We offer 15-20 new product listings for sale daily. Each product undergoes an extremely rigorous quality-assurance and listening session by one of our qualified technicians. We understand that buying used audio equipment can be rife with uncertainty and unexpected headaches. Our quality assurance program is informed by a knowledge-base built through delivering over 30,000 used audio products to satisfied customers. We promise to deliver your product in good working order - exactly as described 100% of the time. Support: We don’t just make promises. We stand behind them - your satisfaction is guaranteed. Our support team is ready to help you with any questions you might have before and after the sale. Value: In the never-ending pursuit of high performance, it’s important to stretch your limited budget as far as possible. Used equipment sells for a fraction of new prices, and with a partner like The Music Room you can upgrade any time you like and get most of your money back. There’s simply no better way to maximize a limited audio budget. Packaging: We’ve invested thousands of dollars and countless hours into mastering our state-of-the-art packaging process. Our custom foam-in-place packaging system allows us to safely package almost any item regardless of irregular shapes or sizes. Most importantly, this system provides our customers with a re-usable shipping box which increases the resale value of the product and provides a shipping method for easy, secure returns. Be seen by over 70,000 monthly visitors. Visit us online to Buy / Sell / Trade / Consign Payment: Prompt payment is expected. Paypal is preferred but all forms of payment are accepted. Unpaid item case will be opened after 3 days if no payment received. Shipping Times: Most Domestic orders ship within 1 business day of purchase. For International orders or freight shipments, please allow 2-3 business days. In all cases, tracking information will be emailed to you at the moment the shipping label is created. If you cant find it or have other questions about shipping & logistics, please contact us. Shipping Costs: Flat rate shipping costs are applicable within the contiguous 48 States (USA). These rates are clearly posted on each product page. For an International or custom quote (including Hawaii, PR, AK) please contact us. Returns: Every purchase made on eBay carries a 30-day, satisfaction-guaranteed return policy. If youre not happy with your purchase for any reason or if youve simply changed your mind... no problem. Simply ship it back for a full refund or exchange (minus S&H costs). If you have received an item that is defective in some way, we will make it right. Let us know - we will pay for return shipping and repair the item or refund 100% of your original purchase price.

DetailsConditionUsed - like new, factory double box Specifications Power Output - All Channels Driven 250 watts RMS x 5, continuous, 20 Hz - 20 kHz 8? 400 watts RMS x 5, continuous, 20 Hz - 20 kHz, 4? Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion: balanced 16 V rms < 0.04 % Slew rate: > 130 V/µsecond Dynamic headroom: > 1.5 dB Interchannel crosstalk: > 78 dB at 1 kHz; > 63 dB at 20 kHz Input sensitivity: 1 V for 28.28 V, THX Reference Lev Input impedance: 47 k ? unbalanced; 94 k ? balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: > 1100 at 20 Hz

Experience high-quality sound with the Parasound Halo A 2 Channel Power Amplifier. This amplifier offers powerful and clear audio, perfect for enhancing your music listening experience. With its two channels and sleek design, it is a great addition to any home audio system. This Parasound Halo A Power Amplifier is a reliable and durable product, perfect for those who want to invest in their home audio system. Its brand, Parasound, is known for producing high-quality audio equipment. It is ideal for those who want to elevate their music listening experience and enjoy superior sound quality.

Up for sale is this pre-owned Parasound Halo A51 5-Channel Power Amplifier Silver. Dimensions Are: 20.5 Deep X 19 Wide X 7 High. Includes owners manual & power cable. Will be professionally packed and shipped with insurance and signature required. There is one small blemish scratch on the front top panel of Amplifier (See Close Up Photo). This amplifier was purchased from an authorized Parasound dealer.It was purchased new and there has only been one owner.It was installed in a small home theater designed by Anthony Grimani from PMI (Performance Media Industries).It was used infrequently and driven very lightly due to being installed in a small theater.The theater was temperature controlled to 72 degrees Fahrenheit, 24/7/365, with no windows or damaging sunlight.The theater, and the entire home, were smoke-free, pet-free, and child-free.The amplifier is in excellent physical, electrical, and acoustic condition (Other Than The Small Blemish Mentioned Above).Features: Circuitry designed by legendary John CurlTHX Ultra2 certifiedHigh bias Class A/AB operationBalanced inputs with discrete circuits and XLR connectorsDirect Coupled - no capacitors or inductors in signal pathComplementary MOSFET driver stage and JFET input stage40 beta-matched 15 amp, 60 MHz bipolar output transistors2.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel164,000 ?F power supply filter capacitanceDC Servo and relay protection circuitsAC present, channel status, high temperature indicatorsHeavy-duty 24k gold-plated 5-way speaker terminalsGold-plated RCA input jacks; ground lift switchAuto turn-on by 12v trigger or audio signal4u Chassis, carry handles, rack mounting adapter included Specifications: Power Output - All Channels Driven 250 watts RMS x 5, continuous, 20 Hz - 20 kHz8? 400 watts RMS x 5, continuous, 20 Hz - 20 kHz, 4?Current capacity:60 amperes peak per channelPower bandwidth:5 Hz - 100 kHz, +0/-3 dB at 1 wattTotal harmonic distortion:< 0.2 % at full powerIM distortion: balanced 16 V rms< 0.04 %Slew rate:> 130 V/µsecondDynamic headroom:> 1.5 dBInterchannel crosstalk:> 78 dB at 1 kHz;> 63 dB at 20 kHzInput sensitivity:1 V for 28.28 V, THX Reference LevInput impedance:47 k ? unbalanced; 94 k ? balancedS/N ratio:112 dB, input shorted, IHF A-weightedDamping factor:> 1100 at 20 HzVoltage:110V - 120VNet weight: 80 lb. Important Note:The excellent condition of this amplifier has been carefully documented and photographed.You should only purchase this amplifier if you are a serious buyer who knows exactly what is being sold.Please do not view this as an opportunity to “kick the tires” to see if you like Parasound amplifiers.Do yourself a favor and skip this item if you are not sure, or if you possibly have other motivations.Please review the included photos.Other Gear from this TheaterAll of the components from this theater are being sold by QuikDrop on Ebay:1 - Parasound Halo A21 2-Channel Power Amplifier2 - Triad Gold Series In-Room LCR Speakers - Black1 - Triad In-Wall Gold/6 LCR Speaker - Black4 - Triad In-Room On-Wall Silver Subwoofer - Custom Designed by PMI4 - Triad Gold Series On-Wall Surround Speakers Bipole – BlackThe availability of these items is subject to change over time and this list will not be updated *****NO P.O. BOXES***** Local Buyers Must Choose Local Pickup At Checkout And Pay In Person At Our Store. **Please understand we are a 3rd party seller who operates an actual business providing this service for our consignors. These are not our personal items where we can afford to offer free shipping. Our flat shipping rates include shipping charges to your location, all packing materials and handling and packing, insurance, delivery confirmation. We take pride in our shipping. We strive to pack them sometimes beyond shipping guidelines so we know and you can feel secure they will arrive to you safely. I pack your items like I would want my stuff to be packed, safe and sound** NOTE: We get a lot of emails and we will answer them as the order they are received. Please see photos for details! Please visit our store! FEEDBACK IS GIVEN when your transaction is complete and is left for us we will automatically give feedback once positive feedback is received. US BIDDERS: We ship through UPS or USPS depending on the weight and size of the item. Be confident your package will arrive safely! Item Number: 4894-34 SKU: 2501 Condition Description:

Continuous power output: 250 watts RMS x 5, 20 Hz - 20 kHz, 8 ?, all channels driven 400 watts RMS x 5, 20 Hz - 20 kHz, 4 ?, all channels drivenCurrent capacity: 60 amperes peak per channelPower bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 wattTotal harmonic distortion: < 0.2 % at full powerIM distortion: balanced 16 V rms < 0.04 %Slew rate: > 130 V/µsecondDynamic headroom: > 1.5 dBInterchannel crosstalk: > 78 dB at 1 kHz; > 63 dB at 20 kHzInput sensitivity: 1 V for 28.28 V, THX Reference LevInput impedance: 47 k ? unbalanced; 94 k ? balancedS/N ratio: 112 dB, input shorted, IHF A-weightedDamping factor: > 1100 at 20 HzVoltage: 110V - 120VDimensions: 17-1/2 w x 7-5/8 h x 20 d, 7 h without feetNet weight: 80 lb.

In mint condition. Kept in a cooling cabinet with strong ventilation. This is one of the few amps that is pure class A for the first 10 watt (most of what you need to drive any speakers). No known problems whatsoever. Local pick up only!! ABSOLUTELY no shipping unless you can arrange your own pickup, boxing and freight. It weights almost 100 lbs! Can demonstrate its in working condition for SERIOUS BUYERS. Reason for selling: such a powerful amplifier is unnecessary to drive bookshelf satellite speakers. Decided to get a digital amplifier that keeps the fan noise down.

Fantastic sounding and powerful 5 channel amp. In excellent condition. Took it out of the box, placed it on my rack and havent handled it since, so other than a minuscule few marks on the left front side, it is a lovely thing. Comes with box & manual. Lives in a low humidity, smoke, and pet free environment all its life. Local pickup preferred as this thing weighs a ton and would be very costly to ship.

Parasound Halo A51 5 Channel Power Amplifier A51 Halo. Condition is Used. Local pickup only.

Parasound Halo A51 5 Channel Power Amplifier Silver Designed by John Curl Continuous power output: 250 watts RMS 8 ? 400 watts RMS 4 ? THX Ultra 2 Dimensions - 17-1/2 w x 7-5/8 h x 20 d, 7 h Weight: 80 lb.

Parasound Halo A51 5 channel 250 Watt power amp. Amp is in excellent cosmetic and operational condition. It has both RCA and XLR balanced inputs. Please check out the pictures for overall condition. Switched to a 7 channel amp so selling this very reliable and wonderfully sounding amp. Includes original power cord, rack mounting brackets, 12V trigger cable, and owners manual. Will be shipped in original double box.

For sale is a 5-channel Parasound Halo A51 power amplifier in very good condition except a tiny blemish and a scratch at lower left corner (see pictures). This unit was more than $5000 when bought new and still manufacturing. I have used it for home theater through Marantz receiver preouts and stereo music through Conrad-Johnson tube preamp (sold). Both watching movies or TV and listening to music giving fantastic, punchy and musical enjoyment. There were no original boxes as those were left behind when I moved to a smaller house where I was unable to store the big size double boxes. Because this is an 80 lbs amp, it will be too risky to ship. Therefore, the sale is for LOCAL PICK UP ONLY in Malden Massachusetts.

Hello Friends: Here is a Parasound Halo A51, 5-channel amplifier (250W X 5), in silver finish. Unit is in pristine operation and cosmetic condition. No scratches or dents. Has been well cared for. Used conservatively, never over-stressed. Was mounted externally (top of rack, in open air) for optimal thermal cycling/ventilation. Unit includes: original manufacture's carton/box and packaging materials, rack mounting brackets, original AC cord, user manual. Note: unit is packed in double box One of the best multi-channel amplifiers available. The best sounding amp I've ever owned. Those familiar with Halo products know the quality of construction and performance. I am original owner. Priced to sell. Will ship to lower 48 states, only. No international shipping. I am downsizing, moving into a much smaller living situation. (unit specifications, from Parasound website): Continuous power output: 250 watts RMS x 5, 20 Hz - 20 kHz, 8 ?, all channels driven 400 watts RMS x 5, 20 Hz - 20 kHz, 4 ?, all channels driven Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion:   balanced 16 V rms < 0.04 % Slew rate: 130 V/µsecond Dynamic headroom: 1.5 dB Interchannel crosstalk: 78 dB at 1 kHz; 63 dB at 20 kHz Input sensitivity: 1 V for 28.28 V, THX Reference Lev Input impedance: 47 k ? unbalanced; 94 k ? balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: 1100 at 20 Hz Voltage: 110V - 120V Dimensions: 17-1/2 w x 7-5/8 h x 20 d, 7 h without feet Net weight: 80 lb.

Hello Friends: Here is a Parasound Halo A51, 5-channel amplifier (250W X 5), in silver finish. Unit is in pristine operation and cosmetic condition. No scratches or dents. Has been well cared for. Used conservatively, never over-stressed. Was mounted externally (top of rack, in open air) for optimal thermal cycling/ventilation. Unit includes: original manufacture's carton/box and packaging materials, rack mounting brackets, original AC cord, user manual. Note: unit is packed in double box One of the best multi-channel amplifiers available. The best sounding amp I've ever owned. Those familiar with Halo products know the quality of construction and performance. I am original owner. Priced to sell. Will ship to lower 48 states, only. No international shipping. I am downsizing, moving into a much smaller living situation. (unit specifications, from Parasound website): Continuous power output: 250 watts RMS x 5, 20 Hz - 20 kHz, 8 ?, all channels driven 400 watts RMS x 5, 20 Hz - 20 kHz, 4 ?, all channels driven Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion:   balanced 16 V rms < 0.04 % Slew rate: 130 V/µsecond Dynamic headroom: 1.5 dB Interchannel crosstalk: 78 dB at 1 kHz; 63 dB at 20 kHz Input sensitivity: 1 V for 28.28 V, THX Reference Lev Input impedance: 47 k ? unbalanced; 94 k ? balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: 1100 at 20 Hz Voltage: 110V - 120V Dimensions: 17-1/2 w x 7-5/8 h x 20 d, 7 h without feet Net weight: 80 lb.

Get ready to experience the ultimate power and quality in your home audio system with the Parasound Halo A51 5 Channel Power Amplifier. This amazing amplifier boasts 5 channels and 5 inputs, allowing you to connect all your favorite home audio devices for an unparalleled listening experience. The Halo A51 is beautifully designed with top-of-the-line components to deliver high-quality sound and power to your speakers. This power amplifier is perfect for any music lover who wants to take their audio system to the next level.

Hello Friends: Here is a Parasound Halo A51, 5-channel amplifier (250W X 5), in silver finish. Unit is in pristine operation and cosmetic condition. No scratches or dents. Has been well cared for. Used conservatively, never over-stressed. Was mounted externally (top of rack, in open air) for optimal thermal cycling/ventilation. Unit includes: original manufacture's carton/box and packaging materials, rack mounting brackets, original AC cord, user manual. Note: unit is packed in double box One of the best multi-channel amplifiers available. The best sounding amp I've ever owned. Those familiar with Halo products know the quality of construction and performance. I am original owner. Priced to sell. Will ship to lower 48 states, only. No international shipping. I am downsizing, moving into a much smaller living situation. (unit specifications, from Parasound website): Continuous power output: 250 watts RMS x 5, 20 Hz - 20 kHz, 8 ?, all channels driven 400 watts RMS x 5, 20 Hz - 20 kHz, 4 ?, all channels driven Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion:   balanced 16 V rms < 0.04 % Slew rate: 130 V/µsecond Dynamic headroom: 1.5 dB Interchannel crosstalk: 78 dB at 1 kHz; 63 dB at 20 kHz Input sensitivity: 1 V for 28.28 V, THX Reference Lev Input impedance: 47 k ? unbalanced; 94 k ? balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: 1100 at 20 Hz Voltage: 110V - 120V Dimensions: 17-1/2 w x 7-5/8 h x 20 d, 7 h without feet Net weight: 80 lb.

This is a Used Parasound Halo A51.  It arrived to me damaged from shipping w/ a crack/dent on the front top right corner of the faceplate and heat sink.  There are some additional difficult to capture scratches on some of the heatsinks and the P light has a scratch on it.  Rear terminals all in great condition w/o obvious signs of damage/wear.  Most of this is imperceptible from >5 feet away.  Otherwise the amp works perfectly, I used it w/o any issues for 3 years for atmos channels in a home theater.  I am only selling because I have downgraded the home theater. This is a great opportunity for someone to get a phenomenal amp for a discount d/t cosmetic issues.  Please inquire if you would like more pictures of the item. Ideally looking for a local sale since I do not have the original box.  That being said, if someone is willing to pay shipping costs I can arrange for them to be shipped in my other A51’s box.

Parasound Halo A51 5 Channel 250W Power Amplifier. Great excellent condition. I own 2 of these as I was going to Bi-Amp my B&W 803s and I never proceeded with that plan. I bought this from a licensed dealer when I built my house 6 years ago as a barely used and fully tested model. Before I decided to put this up for sale I had it completely checked out and refreshed with all critical capacitors replaced in all 5 amp modules. Yes, there are literally 5 separate amp modules in this Bad Boy. Includes Power cord. The Halo A51 by Parasound is one of the best Multi channel amps available. If you dont know the Parasound quality, please google some references and you will hear ... and all the hype is deserved. The amp will be shipped in the original double boxes. The unit is cosmetically clean and functionally/sonically perfect. Please let me know if you have any questions. If you are not satisfied, unit can be returned less shipping cost, and at buyer expense. Please visit Parasound.com to see full specs.

This is a like new Parasound Halo A51. I purchased it from the original owner who used it very lightly for home theater. I used it for the past 4 years very lightly for home theater rear channels. I have now downgraded my home theater and no longer need it.This week I had it serviced at an authorized repair center, Adams Electronics, and they replaced the power relays, effectively renewing the amplifier to like new condition. I can confirm listening to the amp w/ sensitive speakers I hear no audible hum or defects.I see no cosmetic defects whatsoever, I provided pictures to confirm.I also am selling another Parasound Halo A51 amplifier that has been cosmetically damaged, whichever amplifier sells first, I will keep the other. I think that should speak to the quality and condition of both of these amps as I am willing to keep one of them.Please send offers with address so I can calculate shipping costs appropriately.

Used Parasound Halo A51 5 Channel Power Amplifier. Working condition, been unused for a few years. Sold as is.

Used Parasound Halo A51 5 Channel Power Amplifier. Working condition, been unused for a few years. Sold as is.

Hello Friends: Here is a Parasound Halo A51, 5-channel amplifier (250W X 5), in silver finish. Unit is in pristine operation and cosmetic condition. No scratches or dents. Has been well cared for. Used conservatively, never over-stressed. Was mounted externally (top of rack, in open air) for optimal thermal cycling/ventilation. Unit includes: original manufactures carton/box and packaging materials, rack mounting brackets, original AC cord, user manual. One of the best multi-channel amplifiers available. The best sounding amp Ive ever owned. Those familiar with Halo products know the quality of construction and performance. I am original owner. Priced to sell. Will ship to lower 48 states, only. I am downsizing, moving into a much smaller living situation. (unit specifications, from Parasound website): Continuous power output: 250 watts RMS x 5, 20 Hz - 20 kHz, 8 ?, all channels driven 400 watts RMS x 5, 20 Hz - 20 kHz, 4 ?, all channels driven Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion: balanced 16 V rms < 0.04 % Slew rate: 130 V/µsecondDynamic headroom: 1.5 dBInterchannel crosstalk:78 dB at 1 kHz; 63 dB at 20 kHzInput sensitivity: 1 V for 28.28 V, THX Reference Lev Input impedance: 47 k ? unbalanced; 94 k ? balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: 1100 at 20 Hz Voltage: 110V - 120V Dimensions: 17-1/2 w x 7-5/8 h x 20 d, 7 h without feet Net weight: 80 lb.