Up for sale is my B&K Reference 125.7 S2 amplifier.it is in very good cosmetic condition overall with minor blemishes here and there with pictures to show them.The inside chassis is very clean.I would conservatively rate it a 7 but could be up to an 8 depending on how particular you are with your gear.It is fully functional and sounds fantastic.A powerful amp rated at 125x7 @ 8 ohms and 185x7 @ 4 ohms that will drive just about any speaker and I have used it for many through the years.It comes with the manual and power cord but no original box but I will over pack it for a secure shipment.Email with any questions.Thanks!
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 B&K Reference 125.7 S2- 7 Channel Amplifier

FEATURES:

• Gold-Plated Connectors for improved sound with minimized signal loss and degradation.
• Five way Gold-Plated binding posts for speaker connections.
• Balanced Inputs deliver the quietest and most accurate signal path between your preamp and amplifier.
• Class A Pre-Driver circuitry improves low-level detail for a smoother and more musical sound.
• Class AB Mosfet Output stage delivers efficient, linear power.
• Differential input stage with a current source load assures DC stability and wide bandwidth linearity.
• Use of 1% Metal Film Resistors in the entire active circuitry to reduce noise for greater purity of sound.
• Use of Toroidal Transformers to provide high current for superior dynamics.
• Large capacity Computer Grade Capacitors for extended low frequency control and improved dynamics.
• Capability to operate at full power with a square wave input signal.
• All Power Ratings are measured from 20 Hz to 20 kHz.
• Short Circuit Protection provides limited short term protection from accidental shorting of output devices.
• Individual
  External Fuse Protection prevents damage from accidental shorting of
  output devices, while preserving the highest level of integrity to the
  original signal possible.
• Built
  in Thermal Protection to provide limited protection under conditions
  when your amplifier is being over driven or inadequately ventilated.
• All amplifiers are designed to be easily integrated to a whole house install as well as a second zone application.
• All amplifiers
  can be externally controlled via a 12VDC trigger, supplied by all B
  & K preamplifiers and receivers. Daisy chaining amplifiers is also
  an available feature.
• B & K products are available in 17” standard black or silver and 19” rack mount black or silver.
• All B & K products sold through authorized dealers are covered by a 5 year, parts and labor factory warranty.

SPECS:

Number of Channels

7

Power Rating @ 8 §Ù

125 W

Power Rating @ 4 §Ù

185 W

Pairs of Output Devices Per Channel

2

Amperage Peak to Peak

30

Dynamic Head Room

1.2 dB

Frequency Response

5 Hz to 45 kHz

Damping Factor (50 Hz)

180

Input Sensitivity (RCA)
Unbalanced

1.0 V

Input Sensitivity (XLR)
Balanced

2.0 V

Input Impedance §Ù

33.2 k

IM Distortion (SMPTE)

.09%

Total Harmonic Distortion

.09%

Slew Rate

14 v/µs

Signal To Noise Ratio

95 dB

Level Controls

N/A

Balanced Inputs *

Yes

Dimensions in Inches                         
(Cutout Dimensions)
(Width/Height/Depth)

17 (17 1/8) W
5 13/16 (5 15/16) H
15 3/4 (16 1/2) D

Shipping Weight

43 lbs.