Economy 6 Watt Amplifier Kit A-7

• alternative name: Heath Company

The Heathkit A-7 is a vintage vacuum tube mono audio amplifier produced from approximately 1952 through the early 1960s. Rated for roughly 6 to 7 watts of output power, it was typically sold as a kit for hobbyists to assemble and is known for its "vintage-inspired" gray hammer-tone chassis and warm analog sound.

Technical Specifications:
According to official Heathkit documentation and enthusiast archives:
Power Output: rated at 6 watts.
Frequency Response: ±1.5 dB from 20 to 20,000 cps.
Output Impedance: 4, 8, or 15 ohms.
Standard Tube Complement:
Output: 2 x 12A6 beam power pentodes (sometimes VT134A).
Voltage/Phase Inverter: 1 x 12SN7 or 12SL7 (depending on version).
Rectifier: 1 x 5Y3 full-wave rectifier.
Preamplifier: 1 x 12SQ7 or 12SL7 (on phono/preamp versions).
Dimensions: 11 1/2" wide x 5 1/4" high x 6 1/2" deep.
Weight: approximately 10 lbs.

Collector & User Insights:
Conversion Potential: Many modern owners convert these units into low-wattage guitar amplifiers, as they produce a sound profile similar to 1950s Fender "Tweed" amps.
Reliability: While praised for their robust construction, some testers have noted that original power transformers may be prone to failure in older units.
Historical Use: Beyond home audio, these small amps were valued in recording studios for their unique "flavor" in a mix.

Donde encontrará 816 modelos, 799 con imágenes y 515 con esquemas.
Ir al listado general de Heathkit (Brand), Heath Co.; Benton Harbor (MI)