Crimson 275 Stereo Tube Power Amplifier


  • 75 x 75 watts into 8 ohms

  • Under 2-ohm capability

  • Tubes

    • 12AX7 x 1

    • 12AT7 x 2

    • 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 inputs

  • Crimson finish

  • Convection cooling




Rated Power:
More than 75 Watts Per Channel, minimum, typically 90 watts, at eight ohms, from 20Hz to 20kHz with no more than 1% total harmonic distortion while delivering music into loudspeaker loads. 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 during music reproduction.


Less than 1.0%


24 Hz to 28 kHz without filters


Line Inputs:
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


Sparkle Burgundy Red, Raven Black.


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.