This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

DESCRIPTION This Audio Research Classic 30 was recently given a clean bill of health and a new set of tubes from George Meyer AV in Los Angeles CA. It has one small blemish just to the lower left corner of the AR name plate on the front.  Item will be shipped with tubes installed (unless requested otherwise) in original box and packaging. ABOUT It's tempting to regard the Classic 30 as merely the smaller sibling of the Classic 60 and 150. But the skeptical music lover or audiophile who auditions the Classic 30 is in for quite a shock. Because this little hybrid stereo amplifier - rated at 30 watts per channel packs a sonic authority and eloquent musical veracity that larger, more conventional power amplifiers might envy. Our engineers have discovered that sometimes less is very definitely more. Of course. the Classic 30 features almost all the same technology as its bigger brothers, scaled down for more modest applications. It has four 6550s instead of eight, two 6FQ7 driver tubes instead of four, and no fans because it runs remarkably cool without any help whatsoever. But this smaller design still retains a similar degree of exceptional musical resolution. Even at low gain settings, the Classic 30 is far more musically lucid than amplifiers objectively far more powerful. The Classic 30 is at its pristine best with moderately efficient loudspeakers in small to medium sized listening rooms: with program materials that demand high resolution and subtlety rather than pure muscle. In that context, it reveals the same sonic mastery as its more powerful siblings. Specifications Power output: 30 watts per channel into 16? (stereo) Frequency response: 15Hz to 20kHz Total harmonic distortion: 1% Damping factor: 23 Input sensitivity: 0.4V Signal to noise ratio: 93dB Speaker load impedance: 4? to 16? Valve complement: 4 x 6550, 2 x 6FQ7/6CG7 Dimensions: 480 x 180 x 370mm Weight: 20.9kg Year: 1988

Up for sale is a Audio Research M300 MKII Monoblock Class A Tube High Definition Power Amplifier! This is a very rare, very nice high quality unit and it is fully functional and working. It has minimal cosmetic wear with no damage and has had new tubes installed. These typically come in pairs, I just have the one. These are very rare and sought after. SPECIFICATIONSPower Output - 300 Watts minimum continuous at 8 Ohms from 16Hz to 20kHz with less than 0.8% total harmonic distortion (typically below 0.005%at 1 Watt)Approximate Actual Power Available at Clipping - 330 Watts (1kHz)Power Bandwidth - (-3dB Points) 10Hz to 60kHzInput Sensitivity - 0.9V RMS for rated outputInput Impedance - 60K Ohms, nominalOutput Regulations - Approximately 0.3dB. 8 Ohm load to open circuit (damping factor approximately 30)Negative Feedback - 20dBSlew Rate - 25 volts/microsecondRise Time - 3 microsecondsHum & Noise - Less than 2mV RMS 90dB below rated output (broad-bandwidth unweighted, inputs shorted)Power Supply Energy Storage - Approximately 350 JoulesPower Requirements - 105-125VAC 60Hz (210-250VAC 50Hz), 900 Watts at rated output, 450 Watts at idle - 130 Watts at standbyDimensions - 19 (48 cm) Wide (standard rack panel) x 10.5 (27 cm) High x 16 (41 cm) Deep (front panel back). Handles extend 1 5/8 (4.1 cm) forward of the front panel. Output connectors extend 1 behind rear panel.Weight - 110 lbs, Net 116 lbs shippingTubes Required - 4 - Matched pair 6550 (low gas) Power Output Comes with the ORIGINAL BOX. I dont have the manual, but it can be easily obtained online for free. This is a very large, VERY HEAVY piece of equipment. I will ship via UPS only as theyll have the best prices and are best equipped to handle something like this. Yes, I know that shipping is expensive. I will cover additional insurance and signature confirmation. Local pickup is acceptable and super cool! Any questions just ask, thanks for looking!

I had this pair of Mono Block M300 since 1994 and they are working great and sound radicular powerful and can sound compatible to McIntosh MC275 . The front ends were designed with Solid State operational amplifier to couple 8 pieces of 6550 Power Tube for each Mono Block. The output Transformer was designed with trifilar coils for coupling with plate, gride, and cathode, i.e., that is very similar to the original McIntosh MC275 power amplifier. For modern MC275, the output transformer is designed with only bifilar, one set of coil omitted to save cost. But they did not sound like their original MC275 anymore, very close to Solid State Power Amplifier. You can check with their schematics for the detail of their output transformers. This Audio Research M300 had the sound quality similar to original MC275 from 1960 units with 4 X RMS power output of MC275.The price in the listing is for a pair of mono block Audio Research M300 power amplifier in working condition. You can go Audio Research website to download their service manual with schematic.Because I am planning to move back to my motherland, I have to clear out all fantastic Audio amplifier collections over half a century.

We traded in from our customer, who was one owner.Local pick-up highly preferred.Audition/test available at our Anaheim shop.This listing may end if we sold thru other online mart like usaudiomart, audiogon or locally.CLASSIC 30 SPECIFICATIONS (AC line set @l20V 60Hz for these specifications)Power Output:30 watts minimum continuous at 16 ohms from l?Hz to 20kHz with less than1.0% total harmonic distortion (typically below .005% at l watt)Power Bandwidth: (-3dB Poi nts) l5Hz to 50kHzInput Sensitivity: .4V RMS for rated outputInput Impedance: lOOK ohms, nominalOutput Regulation: approximately 0.4dB 16 ohm load to open circuit(Damping factor approximately 23)Negative Feedbac k : l9dBSlew Rate: 15 volts/microsecondRise Time: 3.5 microsecondsHum & Noise: Less than 0.5mV RMS - 93dB below rated output (20kHz bandwidth unweighted , inputs shorted )Power Supply Energy Storage: Approximately 150 joulesPower Requirements: l05-l25VAC 60Hz (210-250VAC 50Hz) 300 watts at rated output,400 watts maximum, 200 watts at 11 idle11Dimensions: 1911 (48 cm) W (standard rack panel) x 7 (18 cm) H x 14.511 (37 cm) D(front panel back). Handles extend l 5/811 (4.l cm) forward of the frontpanel. Output connectors extend 111 behind rear panel.Tubes Required: 2 - Matched pair 6550 (low gas) - Power Output2 - 6FQ7/6CG7 - Drivers

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an Audio Review from 1988! This review will have SPECS, COMMENTARY, DETAILS, and INFORMATION about the item listed A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This Acoustic Research audio extension cable is perfect for connecting your audio devices with ease. It features RCA male connectors on both ends with a 1:1 connection split/duplication, ensuring that you get crystal clear audio quality. The 3 ft. cable is shielded and gold plated, ensuring that there is no interference or noise while you enjoy your favorite music. This cable is a great addition to any audio setup and is made in China. Get your hands on this NOS (New Old Stock) cable now! New Old Stock See photos for condition Thanks for looking

This is a ORIGINAL Review from 1988! - It will have Specs, Commentary, A Test and Details about the product listed. Great for collectors and audiophiles! Get it before its gone! These are vintage RARE Ads and Reviews for some of the best Audio Equipment ever made. -Check out my Ebay Store for THOUSANDS more Ads, Reviews, and Brochures relating to Audio. I have EVERY major audio brand from the last 50 years! Type in any brand name in my SEARCH bar on the left side of my Store home page. -These Ads and Reviews have been APPRECIATING over the years, on average about 10% per year. They dont make any more of them! Once they are gone, they are gone! Some are over 50 years old! - Ready for framing or put into a protective binder. 100% original, no copies or reproductions. - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional item! -All these ads are 100% ORIGINAL! They are from the year they are listed as. We also have a REPRINTS section if you are interested in them. -Satisfaction guaranteed! THANKS! ELECTRONICS ARCHIVES Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This D300 power amplifier listening room and drive a pair of Klipsch RF-82 II.Come with Audio Research owner mamual.D300 power amp. serial number:93268006.