Category Archives: Radio Craftsmen

Radio Craftsmen | USA

Radio Craftsman C500A
Radio Craftsman C500A

The Radio Craftsmen” seems to be founded in 1947 by John Cashman who before worked at Hallicrafters Radio Company. The first product (perhaps even before the official foundation of the company) is the very special designed kitchen radio “Kitchenaire”. Shown by SAMS Photofact in October 1946, this date is for sure. But the aim was to develop and produce home audio and television sets. Ed Miller and Sid Smith were two major engineers to work for Radio Craftsman during early 40’s – mid 50’s. Actually, Ed Miller is the founder of Sherwood and who leave Radio Craftsman before 1953 (This year he founded Sherwood and mainly focused on integrate amp and receiver). Sid Smith later left Radio Craftsman and joined Marantz as chief engineer in 1954.

Probably the famoust products are the Audio Amplifiers series 500: The first two generations of C500 were mostly engineered by Sid Smith and licensed by Western Electric. The first generation C500 was introduced in 1951. In 1952 the smooth corner version was replaced by the sharp corner version output. Radio Craftsman C500 is based on Williamson design which operates with 2 x KT66 output tube in triode but pure class A operation with 10 watt output. It has very natural, sweet, clear, realistic and transparent tone than many vintage and modern hi-fi amp.

Via www.radiomuseum.org

Pair Vintage Radio Craftsmen 500 Tube Amps 2nd Version Western Electric Patent

$2,999.99
End Date: Saturday Apr-29-2017 21:37:28 PDT
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Vintage Radio Craftsmen C400 10 Watt Audio Power Amplifier

$499.00
End Date: Sunday May-21-2017 22:55:30 PDT
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Grommes Precision Electronics | USA

Gommes Advertisement
Gommes Advertisement

William “Bill” Grommes founded Grommes~Precision Electronics, Inc. in March of 1946. For more than six years Grommes~Precision called the corner of Milwaukee and Erie in Chicago its own. Began as a company that designed and manufactured signal tracers, Grommes~Precision soon evolved into consumer audio. The name “Grommes” was adopted specifically for Grommes~Precision Electronics’ line of consumer hi-fi products.

Chicago Mayor Daley (l) presenting Bill Grommes (r) with a Pioneer in High Fidelity Award
Chicago Mayor Daley (l) presenting Bill Grommes (r) with a Pioneer in High Fidelity Award

Lead by chief engineer and audiophile, Al Hart, Grommes became a pioneer in high-fidelity. The Grommes line started with mono block tube amplifiers, but soon evolved into pre-amplifiers, integrated amplifiers, stereo amplifiers, and tuners. Demand for quality high-fidelity amplifiers grew substantially and in 1952, Grommes~Precision moved its operations to Franklin Park, Illinois, just outside of Chicago.

By 1955, Life Magazine declared Grommes one of the best buys in hi-fidelity. Not only for its 55PG amplifier, but also it’s LJ-3 “Little Jewel” tube amplifier kit. By far, one of Grommes’ most popular products was the “Little Genie” and “Little Jewel” build-it-yourself tube amplifier kits. The kits came with a full-color instruction guide and all the parts one needed to build their own 10 watt tube amplifier. It was “So simple…it’s like magic.” To this day, many an audio engineer claim they first got the “audio bug” from assembling their own Little Genie kit. Others sometimes got even more…

Via www.grommesprecision.com | Grommes Schematics at www.schematicsunlimited.com

Precision Elec G-101a Grommes 106C Frazier tube pwr amp 4 x 6gt5

$450.00
End Date: Saturday May-20-2017 8:42:32 PDT
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One Pair (2) EICO HF-52 Tube Amplifiers - Nice Condition

$1,200.00
End Date: Saturday May-6-2017 5:09:14 PDT
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Rare Vintage Grommes 20PG 20-PG Tube Integrated Mono Amplifier 6L6 Output Tubes

$449.99
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Pair Schulmerich Mono 6550/KT88 Tube Amplifiers Models 6-228G & 6-228H EXC Sound

$1,999.99
End Date: Saturday Apr-29-2017 21:37:27 PDT
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