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Following on the heels of his highly reviewed 350 mono amplifiers Bob has created the Crimson 275 stereo amplifier. The 275 is a 75 watts per channel stereo amplifier with many of Bob's unique features.
Never one to rest on his laurels, Bob has yet again created a design
that sets a new benchmark, defining what a reasonably priced power vacuum tube
amplifier should be. And it has some of bob unique features. These amps are exceptional value at only $2795.00.
Due to the huge demand for this amp shipping takes about a week from order
The Crimson 275
uses KT120 output tubes that run thru Bob's unique DC restorer circuit. This allow them to run cool and extend tube life. You can actually touch the tubes during play and they are not hot. The amp and tubes come with a 5 year factory warranty and the tubes should last a lifetime.
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 much cooler than normal tube amps, weighs less and the tubes should
last forever. Finally, by using smaller output transformers the cost and size is also
lowered. Compare this amp to any under $5,000.00 competitor.
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 sound amazingly close to the large 350 watt mono's but with only 1/4 of their power at about 30% of their cost.
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.
Specs are as follows:
Rated Power: 75 watts/8 ohms, 75 watts/4 ohms
(Typically 90 watts)
Distortion: Less than 0.5%
Line Inputs: 2x RCA
Input Impedance: 100 kohms
Gain: 30 dB (8 ohms)
Tube Complement: 1x 12AX7, 2x 12AT7, 4x KT120
Bias: Rear panel potentiometer adjust, front panel meter
Source Impedance: 1.7 ohms
Color: Crimson Red with Black and Bright Chrome accents
Dimensions/Weight: Packaged: 19-1/8” X 15-1/8” x 12-7/8” (L x W x H) / 23.3 lbs.
Amplifier: 9.5” X 14” x 7.5” (L x W x H) / 20 lbs.
Warranty: 5 years
Specifications subject to change without notice.
Call us at 770-667-5633 with questions or to order an amp.
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