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Scout's notes

A Leslie Pro Line Model 820 rotary speaker cabinet and matching Leslie Combo Pre-Amp III floor unit. The cabinet is constructed of wood with a black textured Tolex covering, reinforced with aluminum edge trim and a gold and black woven speaker grille. This solid-state model was manufactured by Electro Music in Pasadena, California. The front of the cabinet features two metal badges identifying it as a Pro Line Leslie Solid State 820. The rear identification plate confirms the model number 820 and serial number H 97345, with electrical specifications of 117 Volts, 60 Hz, 150 Watts, and 1.4 Amps. <BR><BR>The included Leslie Combo Pre-Amp III unit is a floor-based controller designed to connect standard instruments to the rotary speaker. The faceplate includes controls for two channels, each with volume and high frequency rolloff knobs, a power switch, and two foot switches labeled for Slow and Fast rotary speeds. The unit features dedicated power and speed indicator lights. A heavy-duty coiled multi-pin Leslie interface cable and a standard power cord are included with the lot.

Collectibles

Leslie Pro Line Model 820 Rotary Speaker Cabinet with Combo Pre-Amp III

Leslie Pro Line Model 820 Rotary Speaker Cabinet with Combo Pre-Amp III, up for auction in Nashville, TN via Common Hour Auction Co. Opening bid $5. The auction opens June 28, 2026. BidDog points you to it — you bid on Common Hour Auction Co.'s own page.

Opening bid$5
CategoryCollectibles
LocationNashville, TN
StatusON POINT
SaleOPENS JUN 28, 2026
Lot#206
Auction houseCommon Hour Auction Co.
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Listed by Common Hour Auction Co. · commonhourauction.com