McIntosh MA6900G Limited Gold Edition (2007)
The MA6900G is a rare, gold-finished integrated amplifier made to commemorate the establishment of McIntosh Japan. Only 150 units were produced. Each one carries the handwritten autograph of McIntosh Laboratory president Charles Lindor on the chassis. The gold stainless steel panels extend to the side panels, and a numbered serial appears on the top cover. Audio Classics lists it as a "Limited Gold Edition" with an original list price of $5,500. Japanese sources record it at ¥945,000 including tax.
Electrically, it is serious hardware. The amplifier is rated at 200W + 200W into 2, 4, or 8 ohms. McIntosh attributes that to its wide-range output autoformer, which maintains equivalent output across all three loads and protects speakers from damage if an output transistor fails. Total harmonic distortion is rated at no more than 0.005%. The preamplifier section has line sensitivity of 250mV/22kΩ and phono MM at 2.5mV/47kΩ, with gain of 20 dB from line to preamp output. A 5-band equalizer adjusts five frequencies within ±12 dB each. The flat detent at center bypasses the circuit entirely. Signal switching uses inert-gas-filled electromagnetic switches, chosen for oxidation resistance and long-term contact reliability.
Protection is extensive. Power Guard limits gain when input/output waveform differences exceed maximum power capability. A sentry monitor watches the output stage's operating time, voltage and current. Additional circuits cover DC, temperature, turn-on delay, and in-rush protection. The front panel carries the signature Blue Eyes power meter showing actual output. Inputs are six RCA line inputs, one XLR line input, and one phono MM input. Outputs are one RCA preamp out and one RCA record out. It draws 4.4A, measures 445mm wide by 198mm high by 476mm deep, and weighs a substantial 34kg. A remote control was included.
Documentation on this model is thin. No period reviews or detailed reception notes have surfaced. One Japanese dealer notes that the MA6900G's weight frequently prompts sellers to request home pickup service. One owner on a forum reports trading his MA6900G for Pass Labs separates without saying why.
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