The LK-72 was a medium powered integrated amplifier kit, first available in 1960. It is easily distinguished from later versions by its dark brown, almost black front panel and matching knobs. Later versions (LK-72B through to LK-72D) had brass panels.

Features included separate treble and bass controls, derived centre channel output with level control, stereo selector and input selector. Slide switches were provided for equalization (RIAA or NAB Tape), scratch filter and loudness. An aluminium chassis provided excellent heat dissipation.

Rated at 35 watts per channel, the LK-72 utilised 11 valves: 4 x 12AX7 (preamplifier stages); 2 x 6U8/6GH8 (split-load phase inverters); 4 x 7591 (output) and a 5AR4/GZ34 rectifier. The output valves operated at well below the manufacturer's design limits ( 75% ) which made for cooler running and longer valve life,. as well as reducing the need for matching and biasing.

The LK-72 had the distinction of being Scott's first integrated stereo amplifier kit-set and the first to use 7591 output valves plus split-load inverters.

In 1963, the LK-72B was released - it was very similar in design to the model 299D.

Priced when new at 149.95, today a fine looking and working example fetches between $250 and $450.00 with fully restored pristine units bringing closer to $700. For more information, see the Vintage Test Report.

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above: late model LK-72D