Luxman L-606 (1974)
The Luxman L-606 is a pre-main (integrated) amplifier released in October 1974 at ¥69,800. It sits in the middle of Luxman's mid-1970s lineup. Power is rated at 40W + 40W into 8 Ω at 1 kHz, and 35W + 35W from 20 Hz to 20 kHz with both channels driven. Total harmonic distortion is listed at 0.05% or less at 35W, with intermodulation distortion at 0.06% or less.
The interesting part is the circuit. Luxman described it as a step forward from the conventional rack-type amplifier. The design eliminates coupling capacitors wherever possible, and the signal goes from the equalizer to the main amplifier through only a buffer stage. The front panel has a signal indicator with a circuit block diagram. Illuminated arrows show the active signal path as you engage tape dubbing, tone controls, or filters. There are also high and low filters, a low booster, and tape-dubbing circuits.
The tone control is Luxman's NF-type system with switchable bending-point frequencies. Phono input sensitivity is 2.8 mV (S/N 65 dB). Tuner and Aux inputs are 190 mV (S/N 76 dB). The unit measures 443 × 153 × 273 mm and weighs 9.3 kg.
Collector sources say the L-606 appears to be internally identical to the L-2800, a model sold under the L&G brand. Same controls, same circuitry. The main difference is that the L-2800 has R/L power meters where the L-606 has its block-diagram signal indicator. A Russian YouTube comparison of vintage Luxman amplifiers against an Accuphase E-305 includes the L-606 among the contenders.
Beyond that, the record is thin. No period reviews, production-run details, or common-maintenance notes have surfaced in the sources available to the Archive. A single Yahoo Auctions listing in 2025-2026 drew a bid of ¥13,000, which is at least a rough floor for current market interest. No reliable pricing picture exists beyond that.
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