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Von der New Yorker Firma Tech-Master gibt es nur wenig

Angeblich hat es die Firma aus Brooklyn nur von 1947 bis etwa 1965 gegeben. Das Besondere an deren Produkten war einer der ersten Transistor- Stereo- Vorvestärker in der März-Ausgabe der US-AUDIO 1959 beworben.
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TOP BUY IN HI-FI - Master-Engineered - Master-Crafted !

TRANSISTOR STEREO PREAMPLIFIER EQUALIZER

Clean, hum-free control and amplification. Straight DC operation - no microphonics or tube noises. Separate bass and treble controls for each channel plus common and balancing controls. Six hi-impedance inputs; four equalized lo-impedance inputs; two levels on "magnetic" for both low and high output cartridges without external transformer. Four output jacks for amplifier and tape. Channel reverse switch. AC control switch. Power drain so low that battery lasts almost full "shelf-life". Size 3" x 9" x 5'/2"; weight 4 lbs.
Model 41, less battery, with cabinet. $59.50.
Model 24, similar, but single channel. $34.50.

DELUXE WILLIAMSON-TYPE 20-WATT AMPLIFIER
Uses famous Williamson circuit with unique modifications for tru hi-fidelity reproduction at increased power output. Ultra-linear operation; screentapped primary output transformer. Frequency response flat and smooth thru entire audible range, with distortion less than .0025 at normal listening levels, and excellent transient characteristics. 20-watt undistorted output; 4-8-16 ohm output impedances. The perfect basic amplifier for stereo systems. Size, 9" x 12" x 6'/2"; weight, 27 lbs.
Model 15W, $59.95.

STEREO-MATIC 10-WATT 2-CHANNEL AMPLIFIER
Both channels have independent volume and tone controls. Power transformer supply, good regulation, line isolation. Binaural and monaural operation. With stereo piezo-type cartridge, will amplify all single and dual-track records. Tuners, microphones, etc. can be fed into Stereo-Matic by adding external switch or connectors. Size, 3%"x93/i"x 5"; weight, 8 lbs. Model 39, $29.95. Model 39A, similar, but with built-in selector switch, $34..50.

15-WATT CONTROLLED AMPLIFIER
BUILT-IN ELECTRONIC CROSS-OVER

Hi-fi amplifier and preamp with two output transformers. Dual hi-lo output circuits using EL-84's in push-pull for bass thru midrange and 6DE7 single end for high frequency response. Brilliance control governs cross-over action. Independent bass and treble controls. Magnetic, piezo and auxiliary inputs. Equalization for RIAA. STEREO ADAPTOR SOCKET for using two model 22 amplifiers in binaural operation. Front panel removable for cabinet or custom Installation. Size, 4" x 14" x 6! 2"; weight, 14 lbs.
Model 22, $49.95.

DUO-MASTER PLUG-IN REMOTE-CONTROL TV TUNER
Just plug a single, thin, coaxial lead into your TV receiver and you can select your stations, fine-tune both picture and sound, and adjust picture intensity - right from your armchair (to 50 feet from screen). Use loudspeaker of Duo-Master or the speaker in your own TV or hi-fi system - or any combination ... or plug headphones right into Duo-Master for private listening. A complete TV sound receiver, ideal for tape-recording TV programs. Three IF stages; two audio stages. Hi-gain, positive switch action tuner. Revitalizes any receiver . . . delivers strong audio and video signals. 9 tubes pijs rectifier. Size 12'/2" x 8" x6"; weight, 15 lbs.
Model 23A, $79.50.

TECH-MASTER CORPORATION
75 FRONT STREET, BROOKLYN 1, N.Y.

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