This is for sale a PASS WHAMMY headphone amplifier designed by Wayne Colburn. I built this amplifier in 2020 to drive my Audeze LCD-3s and it served me well, but I am now out of the headphone game. Board was purchased from Diyaudiostore. Bought all of the parts myself and used really high quality parts through the entire project.

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Pass Labs HPA-1 Stereo Headphone Amplifier; Silver Product SKU: 53420 Voltage: 120V # of Owners: 2 Service History: None Serial Number: 32049 Age: Unknown Tobacco Exposure: No MSRP: $3675 Cosmetic Description: Very good condition with minimal visible cosmetic wear including barely visible nicks and scuffs on the top surface of the unit.  This item looks like new from just a few feet away. Youll have to examine very closely to find any signs of wear. What is Included: Amplifier, Power cable, Factory packaging Other Notes: This HPA-1 was tuned to ensure it meets specs by Jam Somasundram personally, the original developer (former Senior Development Engineer at Pass Labs) of the HPA-1. He signed the bottom of the unit. I venture to suggest that, in bass clarity and authority and in midrange transparency, the Pass Labs HPA-1 is without peer. -Stereophile 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 $55- 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.

Heute biete ich Ihnen folgendes an: PASS Labs HPA-1 Class A Headphone Amplifier / Neupreis 4400,00 Euro technischer Zustand: guter Zustand optischer Zustand: guter Zustand / geringe optische Gebrauchsspuren auf dem Gehäusedeckel Falls Sie den oben aufgeführten Artikel ersteigern und diesen persönlich bei mir abholen, so können wir diesen sehr gerne gemeinsam auf den von mir angegebenen Zustand hin überprüfen. Kein Versand an Packstationen oder Paketshops !!! No shipping to USA

Diyaudio/passdiy ACP+ headphone amp, but I used as a preamp. Topology of the circuit is similar to firstwatt J2. Toshiba 2sj74 jfets used on input stage, 610 mosfet output stage. Great rich sound, only reason selling is making another in more of a preamp form rather than this to spec stock kit build in its naked format.

Diyaudio/passdiy ACP+ headphone amp, but used as a preamp. Topology of the circuit is similar to firstwatt J2. Toshiba 2sj74 jfets used on input stage, 610 mosfet outputs. Great rich sound, only reason selling is making another in more of a preamp form rather than the stock kit in this naked format. Would be well packaged to protect, including generic 3a 24v power supply (only really need less than an amp). I think some people even used this to driver 100db speakers.

Get in on that Wayne Colburn sound with an excellent discrete Opamp from Staccato. Original volume knob is included, I just swapped to a different one for aesthetic reasons. Also included is a TI RC4580 Opamp.

MAIN FEATURES:* Works with headphones with impedances of 15 ohms to 600 ohms.* Designed as a power amplifier rather than a typical headphone amplifier to be able to drive low impedance planar headphones.* Low feedback wide bandwidth discreet design.* Class A direct coupled Mosfet output stage.* Custom low noise Toroidal power transformer with a Faraday shield.* Discreet regulated power supply for audio circuits.The Pass Labs HPA-1 is a Class A headphone amp that was designed to amplify headphones with impedances of 15 ohms to 600 ohms. It can deliver full-range dynamics across the entire frequency range. The HPA-1 can even drive headphones that present difficult loads in terms of impedance, power consumption or both.In order to stand out from the crowd, Pass Labs conceptually designed the HPA-1 as a real Class-A power amplifier, not as an accessory offering only incremental performance gains. The HPA-1 cuts no corners in the circuit design and spares no necessary expense in execution. The foundation of the HPA-1s engineering is a custom, low-noise shielded toroidal power transformer feeding a discreet low noise regulated power supply for the audio circuits. The importance of the power supply is often overlooked and plays a large part in the overall performance of the amplifier.The HPA-1s amplifier circuits are low-feedback, wide-bandwidth discreet designs employing J-Fet input stages and Class A-biased direct-coupled MOSFET output stages. The HPA-1 easily drives headphones presenting loads from 15 to 600 ohms, particularly excelling on planar headphone designs. The sound is rich and detailed.The HPA-1 has a single high-quality headphone jack on the front panel, two sets of single-ended analog inputs via RCA jacks on the rear panel, and also a set of switchable Preamp line-level output jacks on the rear panel. There are no compromises with the HPA-1 when used as a stereo preamp, and it will compete against contemporary preamplifiers. The rear panel holds the power switch and fuse. Volume control is via a hefty rotary knob connected to an ALPS Potentiometer. The other front-panel controls are three pushbuttons to select inputs or to engage the Preamp output.The substantial casework is the customary and well-recognized brushed aluminum shared with other Pass Laboratories products.

MAIN FEATURES:* Works with headphones with impedances of 15 ohms to 600 ohms.* Designed as a power amplifier rather than a typical headphone amplifier to be able to drive low impedance planar headphones.* Low feedback wide bandwidth discreet design.* Class A direct coupled Mosfet output stage.* Custom low noise Toroidal power transformer with a Faraday shield.* Discreet regulated power supply for audio circuits.The Pass Labs HPA-1 is a Class A headphone amp that was designed to amplify headphones with impedances of 15 ohms to 600 ohms. It can deliver full-range dynamics across the entire frequency range. The HPA-1 can even drive headphones that present difficult loads in terms of impedance, power consumption or both.In order to stand out from the crowd, Pass Labs conceptually designed the HPA-1 as a real Class-A power amplifier, not as an accessory offering only incremental performance gains. The HPA-1 cuts no corners in the circuit design and spares no necessary expense in execution. The foundation of the HPA-1s engineering is a custom, low-noise shielded toroidal power transformer feeding a discreet low noise regulated power supply for the audio circuits. The importance of the power supply is often overlooked and plays a large part in the overall performance of the amplifier.The HPA-1s amplifier circuits are low-feedback, wide-bandwidth discreet designs employing J-Fet input stages and Class A-biased direct-coupled MOSFET output stages. The HPA-1 easily drives headphones presenting loads from 15 to 600 ohms, particularly excelling on planar headphone designs. The sound is rich and detailed.The HPA-1 has a single high-quality headphone jack on the front panel, two sets of single-ended analog inputs via RCA jacks on the rear panel, and also a set of switchable Preamp line-level output jacks on the rear panel. There are no compromises with the HPA-1 when used as a stereo preamp, and it will compete against contemporary preamplifiers. The rear panel holds the power switch and fuse. Volume control is via a hefty rotary knob connected to an ALPS Potentiometer. The other front-panel controls are three pushbuttons to select inputs or to engage the Preamp output.The substantial casework is the customary and well-recognized brushed aluminum shared with other Pass Laboratories products.

Kopfhörer In-ear Silikon Delta mit Headphone-Jack sehr gute Passform. Ein einziges mal genutzt. Entsprechend ist alles noch sehr sauber und so gut wie neu.

Sony SRS-7 Portable Passive Wired Mini Speaker System for Headphone Jack - L. ToteA

This Audio-GD Compass Headphone Amp DAC Pre-Amp is a great addition to your home audio setup. It has both analog and digital features, making it versatile for different audio sources. The black color of this unit adds a sleek look to your setup while the RCA audio outputs provide great sound quality. Made in China, this Audio-GD Compass is a must-have for music lovers who want an excellent audio experience. Condition is used as pictured and sold as is.

crisp only 10 hours usage last ten years as it was used to cut a reel to reel tape usa ship only pick up welcome nyc area

MTR PS-8. Professional Passive 8 Way Stereo Headphone splitter. Use to connect multiple Headphone sets to a single stereo Headphone feed. Ideal for educational, conference, language translation or band practice. Tested and in good working order.

Brown Ink Pen - eqw8838

Pass Labs HPA-1 headphone/pre-amplifier. I am reluctantly selling my Pass Labs headphone amplifier / preamplifier HPA-1, due to a move. I brought it new in 2019 and am the first owner. I have used it both as preamp and headphone amp. The sound is clean, clear, open, beautiful. Great opportunity at this price. Mint condition, as new. 220V. Comes with spare fuse. Original box. An amplifier to keep.

2-IN-1-OUT Mini 3.5mm Audio selector designed for customers having several audio sources and outputs? Select audio input between 1 and 2 with 1/2 switcher and get one output? Select audio output between 1 and 2 to receive one inputOne key to Mute; very useful under special conditionsPlug and Play; No power needed; Wont affect sound quality.Note: Only one audio is output at a time (you can switch between two audios)If there are any usage problems please contact the after-sales service directly, we will provide after-sales support for you.3.5mm Audio selector This is a bidirectional switcher for 3.5mm audio ports. 3.5mm audio selector designed for customers having several audio sources and outputs. Main functions: ? Select audio input between 1 and 2 with 1/2 switcher and get one output; ? Select audio output between 1 and 2 to receive one input; How to use: ? connect two audio sources (like CD player / computer) to 1/2 ports and one audio output (like speakers) to IN/OUT port; ? connect one audio source to IN/OUT port and two audio outputs to 1/2 port. Features: Easy installation and simple operation. Only need to lightly press to mute the device; very useful under special conditions. Plug and play; No power supply and other software required; Wont affect sound quality. Analog signal maximum support 2V p-p input and output. Input and output frequency range: 20Hz ~ 20KHz. Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters. Super small size; Compact and super mini size; Easy to place and suitable for your desktop and office. Note: Only three-segment headphones are supported (four-segment headphones are not supported) Package contains: 1* 3.5mm Audio Switch Switcher 1* 3.5mm Audio cable 1* User manual Note: Only one input can be played at a time.

High quality sound - SOCL in-ear headphones provide you with an immersive listening experience. With precision engineered 8. 6 mm audio drivers, combined with our unique sound signature, they provide clear, balanced sound with enhanced bass. So, no matter the genre of music, you’ll be able to clearly hear every note with high-fidelity.Comfortable ergonomic design - SOCL100 provides a comfortable fit to enhance the listening experience. The special ergo-fit sound tube provides you with a precision fit that’s perfect for continuous and long-term usage. Medical grade silicon ear caps ensure a secure fit with no skin irritation.Noise isolation - SOCL100 comes with a noise isolating fit, as it rests securely in your ears with a perfect seal that enhances bass performance.Call clarity & easy music control - a built-in mic lets you take calls on the go, while the in-line remote makes switching songs and accepting or rejecting calls simple, without ever taking your device out of your pocket.Maximum durability - every SOCL100 is rigorously tested by being pulled, bent, Stretched, and stressed for more than 150 hours to ensure the highest quality for everyday use.Whats in the box - the SOCL100 headset, three pairs of ear tips (small, medium, large), and information on our 1-year and fast, friendly customer service.connector type: 3.5mm Stereo TCL Socl100 in-ear earbuds – inspired style. Anywhere entertainment. Tcl’s Socl100 in-ear earbud stereo headphones is perfect for those with an outgoing lifestyle who always look for the perfect way to identify themselves. With vibrant color Schemes, you’ll be sure to find one that fits your personality and mood. Socl100 headphones provide an immersive listening experience that will keep you moving to the music and stepping to every beat. With precision engineered audio drivers, specially tuned by world-class acoustic engineers, they provide crystal-clear and balanced sound. So, no matter the genre of music, you’ll be able to clearly hear every note with high-fidelity. Socl100 also features an oval acoustic tube design that provides you with a comfortable and ergonomic fit for continuous and long-term usage. An in-line remote lets you stay in control. Switching songs and accepting or rejecting calls is simple, without needing to take your device out of your pocket.

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