Are Carver amps this good?

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Posted on August 26, 2024 at 01:04:08

daveinnz
Audiophile

Posts: 10
Location: New Zealand
Joined: May 9, 2024

Hi, members of the Forum with much wisdom.

There is a Carver amp for sale close to where I live. The description is below. My question is.. are the claims made in this advertisement for real? If so, how would this work? Has anyone got a circuit diagram?
If these claims are real, surely someone would have copied, adapted or improved these features.

Your thoughts?

Crimson 275 uses KT120 output Tubes that run thru Bobs unique DC restorer circuit. This allows the tubes to run cool and extend the life of the tube. The variable bias circuit allows you to fine tune the sonic signature and make the amp sound warmer like a classic tube amp or add detail like a more contemporary design. Set from the factory the 275 sounds amazingly close to the large 350 watt mono's but with only 1/4 of their power and is about 30% of their cost.

Bob's unique DC Restorer circuit makes the amp much more efficient than conventional allowing the use of hi efficient smaller output transformers. Advantages are that it runs cooler than normal tube amps, weighs less and the tubes should last forever.

Another significant feature of Bob's design is its ability to " listen to the room," sometimes referred to as the speaker-microphone effect,'

Facilitated by a special current feedback loop, it allows the amplifier to hear' the room's reverb, along with its unique sonic signature. Each room plays its own tune, and this amp uses the speaker as a microphone by using the speaker in reverse (the theorem of reciprocity) to "listen to the room,' thereby allowing a portion of the room acoustic to be expressed through the main speakers. Think of it this way, the room becomes an integral part of the music in a way no other amplifier allows. The sound is more majestic, more realistic, and the soundstage is larger and more compelling than it would be without this unique ability. (sells in the USA $2,750.00 + State Tax)

Specification:

Rated Power: 75 watts / 8 ohms or 4 ohms

Distortion: less than 0.5%

Line inputs: 2 x RCA

Input Impedance: 100 kohms

Gain: 30 dB (8 ohms)

Tube Complement: 1 x 12AX7, 2 x 127AT7, 4 x KT120

Bias: Rear panel potentiometer adjust, front panel metre

Source Impedance: 1.7 ohms

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