Well-Regarded Nikko 120 WPC Power Amplifier, freshly serviced.

This Alpha 230 has been thoroughly serviced as follows and is working perfectly:

Both channels rebuilt to match with new output transistors (which were a different case style, requiring drilling and tapping new holes in the heat sink. Replaced the driver transistors, a few other small transistors, the bias trimpots, and a few damaged resistors. Reflowed all the solder on the driver board and cleaned the speaker relay) and recapped except for the main filter caps.

Features A/B speaker outputs, Stereo power meters, and headphone output.

Power output: 120 watts per channel into 8Ω (stereo)

Frequency response: 0Hz to 100kHz

Total harmonic distortion: 0.008%

Damping factor: 70

Input sensitivity: 1V

Signal to noise ratio: 115dB

Dimensions: 440 x 138 x 344mm, Weight: 13.5kg (29.7 lbs)

This unit is freshly serviced as listed above, and working perfectly with the amber-lit power meets is in good cosmetic condition, but has had the outer edges of its front plate shave off, so that it can fit inside a cabinet, meaning it can no longer be rack-mounted. We are asking just $395 for this unit.

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