• More than 24 Watts Per Channel, both channels driven at eight ohms with no more than 1% Total Harmonic Distortion. Distortion decreases at lower levels

  • Tubes

    • 12AX7 x 1

    • 12AT7 x 1

    • 6AL5 x 1 

    • EL-34 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)

    • VU Meter

  • Rear Panel

    • Power Switch

    • IEC AC Input Socket

    • Line Fuse

    • Tube Fuse

    • Recessed Tube Bias Control

    • 5-way binding post outputs

    • Common, 2, 4, and 8-ohm speaker load

    • Gold-plated RCA Inputs

  • Matte Black finish

  • Convection cooling



Rated Power:
25 watts/8 ohms,

25 watts/4 ohms,

25 watts/16 ohms
Frequency Response:
0, -2 dB from 20 Hz to 20 kHz (–2 dB)
Less than 1.0%
Power Bandwidth:
24 Hz to 28 kHz without filters
Line Inputs:

Source Impedance

1.7 ohms

Input Impedance:
100 K ohms (RCA)
30 dB (8 ohms)
Tube Complement:
One 12AX7, one 12AT7,
one 6AL5, six KT120, one 6AL5,
(KT150 not recommended)
Rear panel potentiometer adjust,
front panel meter
Output Transformer:
Interleaved windings, super wideband, low leakage inductance, proprietary design
Matte Black with natural
aluminum and bright chrome
Dimensions (H x W x D)

7.2” (183mm) X 12” (305mm)
x 14” (355,6mm) x 2


44 lbs (19.95 kg) per chassis x 2

Specifications subject to change without notice.

BM25_Side Temp.png