Bob Carver275 Tube Amp newBOB CARVER CRIMSON 275 - 0% Financing Available for 3 Years!USA Tube Audio - 1-800-676-1085 Ext 2 - [email protected]% Financing Available for 3 Years!Bob Carver Crimson 275 Stereo Amp0% Financing Available, 3 Years - Free Shipping! In design for ove...2750.00

BOB CARVER CRIMSON 275 - 0% Financing Available for 3 Years!

Listing ID: lis96j28 Classified 
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New Retail Price: $2,750.00


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Ships fromScottsdale, AZ, 85258
Ships toUnited States
Package dimensionsunspecified
Shipping carrierunspecified
Shipping costFree
Original accessoriesBox, Manual
Agon miniAverageResearch Pricing

USA Tube Audio - 1-800-676-1085 Ext 2 - [email protected]

0% Financing Available for 3 Years!

Bob Carver Crimson 275 Stereo Amp

0% Financing Available, 3 Years - Free Shipping!

design for over one year, the white knuckles screaming amp, outperforms
amps priced at 5 times the cost of the Bob Carver Crimson 275! Very
closely the Crimson 275 performs next to our 350 series monoblocks which
sell for $9,500 pair!

Bob Carver holds more audio patents than 31 Flavors Ice Creamery.

Bob’s unique DC restorer circuit offers much lower distortion – extended tube and amplifier life.

Totally seriously cool!​

amplifiers run really cool. Heat Kills the electronics, not the Crimson
275 – 75+75 Watts Per Channel. Realiable, robust, amazing sonic


Bob Carver Company warrants the Crimson 275 for a full five years; that’s the amplifier and the tubes!

is a meter on the front of the amplifier which indicates the health of
the tubes — get a bad reading, get free tubes! Aside from the extended
circuit and tube life, it’s the sonics that blew us away. One of the
reasons for this is our proprietary use of two separate feedback loops.
One, typical of what you’ll find in many fine amplifiers, ensures
stability and linearity. But the other is quite fascinating.

An amplifier that actually listens to the room.

loudspeakers generate voltage as they play. It’s generated from the
driver movement necessary to reproduce music but also all loudspeakers
technically “listen” to the room. ​

are electric motors. Electric motors all kick voltage back to the power
source whether it’s a loudspeaker, a refrigerator or an electric
drill.  Manufacturers of line conditioners have a point. Your
refrigerator motor not only adds noise to the AC line, they actually
send electricity back through the wall outlet. We call this Back-EMF.

a tube type amplifier, when back EMF appears at the output terminals,
to the loudspeaker the output transformer’s secondary becomes a primary!
The back EMF enters the amplifier through the transformer and affects
frequency response downstream. With ordinary tube type amplifiers,
speaker matching becomes critical. Our amplifiers are load-invariant.
Through decades of experimentation and some pretty heavy mathematics,
Bob Carver has been able to use the Back-EMF to increase efficiency in
the mighty SunFire subwoofers, and to improve the soundstage and
openness of his full range amplifiers.

This is
done in a unique fashion, and, as in the case of our extended tube life,
unique to our products. The amplifiers listen to the room through the
loudspeakers and preserve a large soundstage. It took literally decades
to get the circuit right without creating artificial coloration. If
you’re concerned about naturalness, consider that Harry Pearson, the
founder of Absolute Sound Magazine, noticed this phenomenon, pointed out
to Bob (who already knew about it) and kept our Silver Seven amplifiers
as his personal reference for years. Dick Olsher from Stereophile
Magazine called this series the most important tube amplifiers in

Crimson 275 Stereo Tube Power Amplifier


  • 75 x 75 watts into 8 ohms

  • Under 2-ohm capability

  • Tubes

    • 12AX7 x 2

    • 12AT7 x 1 (part of DC Restorer circuit)

    • Tung-Sol KT120 x 4

  • Output Transformer

    • Proprietary
      design with hand-wound, interleaved windings of copper and silver on a
      steel core; low leakage inductance, super wide band

  • Four-function meter

    • Bias setting (in conjunction with rear panel control)

    • Tube Tester (tests at actual voltage and current conditions)

    • Tube Matcher (cool, but not really necessary)

    • VU Meter

  • Rear Panel

    • Power Switch

    • IEC AC Input Socket

    • Line Fuse

    • Tube Fuse

    • Recessed Tube Bias Control

    • 5-way binding post outputs

    • Gold-plated 5-way binding posts

    • Gold-plated RCA Input

    • 40Hz crossover switch

  • Crimson hand-rubbed finish

  • Convection cooling

  • Individually hand-signed by Bob Carver


Rated Power:

More than 75 Watts Per Channel, both channels driven at eight ohms,
from 20Hz to 20kHz with no more than 1% total harmonic distortion.
Distortion decreases at lower levels.

4Ω       75 Watts Per Channel

8Ω       75 Watts Per Channel

16Ω     60 Watts Per Channel

Frequency Response:
+0, -3dB from 16Hz to 35kHz.; Flat 20Hz – 20kHz ±0.25dB

Less than 1.0%

Power Bandwidth:
24 Hz to 28 kHz without filters

Line Inputs:
Left/Right gold-plated RCAs

​Speaker Outputs

Gold-plated 5-way binding posts

​Input Impedance:
100 Kohms (RCA)

29 dB (8 ohms)

Tube Complement:

One 12AX7, two 12AT7’s, four KT120’s (optional: KT88 or 6550)

Hum and Noise:
Better than 100 dB below 75 Watts, A-weighted.

Rear panel potentiometer adjust,  front panel meter

Output Transformers:
Interleaved windings, super wide-band, low leakage inductance, proprietary design

Source Impedance:
1.7 ohms

Crossover Roll-Off

Optional —3dB @ 40Hz, 6 dB per octave​

Sparkle Burgundy Red


14″ x 7″ x 9.5″ (W x H x D) / 19 lbs

Country of Origin:
United States of America

Chassis and Tube Warranty:
5 years

Specifications subject to change without notice.




90 Day Price Protection Guarantee assures our clients of our continued
commitment to full satisfaction and delight. Should you find any Hi Fi
product we offer from an Authorized Dealer in the USA for a lower price
than the price you paid to us, we will gladly refund to you the
difference plus 10% of that difference.

Open 7 days, 10am to 8pm Ocean West

USA Tube Audio - Since 1976 
Please call 1-800-676-1085 Sales Ext 2 - USA + Canada 
1-323-657-5993 International 
52-55-8525-6102 Mexico

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