Fairchild 275 Vintage Mono Tube Power Amp 6550 Amplifier w/ Cage! RARE!!!!!!!!!! A True Golden Era Classic!! MUST SEE!! !!!!!!
OneFairchild 275 Mono Tube Amp Original Fairchild 275 Owner’s Manual Original Fairchild 275 Tube Cage 2x New Tung-Sol 6550 Reissue Tubes 2x New JJ GZ34s Tubes 1x Vintage Tung-Sol 12AV7 Tube 1x Vintage 6AB4 Tube
Sherman Fairchild was one of the most significant inventors of the modern era and undoubtedly one of the greatest American entrepreneurs of all time. His contributions to society are so wide spread it would be hard to see an area of technology where he wasn’t an influence. Companies such as Fairchild Aircraft, Fairchild Stratos, Fairchild Hiller, Fairchild Industries, Fairchild Camera and Instrument, Fairchild Semiconductor, and Fairchild Recording, to name a few, all were leading innovators in their respective fields. Sherman Fairchild was also a co-founder of Pan American Airlines and American Airlines as well as Director of IBM, a company his father founded..
In the 1930’s one of Fairchild’s pet projects was Fairchild Recording. He was keen on developing new technology for the budding broadcast and recording industries, which he did. Today components such as the 660/670 compressor/limiter and the numerous equalizers, mixing consoles, line amps, recording lathes, phono cartridge, and broadcast turntables have set a standard of excellence few components have ever achieved. Much of the technology developed by Fairchild Recording was instrumental in the progression of the recording industry and helped lay the foundation of hi fidelity sound.
In the mid 1950’s Tung-Sol developed the 6550 output tube which sent every hi-fidelity audio equipment manufacturer into design mode to take advantage of this new tube’s high output and desirable sonic attributes. No company took a more serious approach than Fairchild, who at the time had enormous resources to do a full scale ground-up research and develop project on this tube. Within a year the fruits of their labors bore the Fairchild 275, a true cost-no-object high fidelity power amp that many feel, even by today’s standards, the greatest 6550 based amplifier ever produced.
Fairchild recognized the demands of the 6550 tube would be great, thus they designed an innovative output & power transformer that were more than adequate for the task. The output transformer was oversized, yet because it embraced a new philosophy of “grain oriented C-Core” design it was considerably more efficient and effective than others. It was able to provide full power output from below 20Hz to 20kHz and drive the 6550 tubes in “Ultra-Linear” operation.
Sonically the Fairchild 275 is in a league of its own. It has a refined and incredibly musical sound, with excellent transient response. Mid-range is sweet and lively, while the high and low ranges are represented extraordinarily well, a true rarity with most vintage 6550 amps. The 275 is a tremendous mono amp, find another for the ultimate is stereo sound!
Power Output Rated 70 watts at less than 2% IM Sensitivity Less than 0.5 Volts RMS required for rated output Frequency Response +0,-0.5dB, 20-20kHz, at any level to 65 watts Input Impedance 250kOhms Output Impedance 4, 8, 16 Ohm nominal impedances Damping Factor Continuously variable, from 0.1 to 10.0, by means of control on amplifier panel. Effective at low frequency Hum & Noise Better than 85dB below rated output. (less that 1.5mv on 16 ohm tap) Tubes 1-6AB4m 1-12AV7, 2-6550, 2-GZ34 Controls ON-OFF switch, Gain Control, Dynamic Balancing Adjustment, Static Plate-Current Balance Adjustment, Damping Factor Adjustment, Bias Adjustment, (output stage), with test jack Power Requirements 105-120Volts, 50-60Hz, 290 watts (3 taps provided for adjustment to average line voltage of 105, 117, or 125 volts) Dimensions 12 1/4” x 8” x 7 1/4” H Weight 34 lbs unpacked
Cosmetically amp is clean, some scratches and paint flaking. Front right corner & right side of chassis has small dent. Tube cage emblem is missing, paint loss & glue residue in that area. Amp sounds good, though has a slight low level hum. Capacitors and other passive internal components are original. Will probably need some of these changed for optimum performance, a good suggestion for any piece of equipment approaching the 60 year mark!
This is a sale so it will go to the highest buyer. Winning buyer pays $45.75 for careful shipping, packaging, & insurance in the continental U.S.
International buyers welcome and pay only actual shipping price, no handling fee.Please note: the item pictured is guaranteed to be the actual item you will receive. None of my pictures are taken off other peoples pages or web sites, so offer with confidence - what you see is what you get! PayPal and any other approved payments gladly accepted! (please email for details) Never a handling fee, buyer pays actual shipping as stated above.
International buyers welcome.
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