Vintage Tube Amp

Harman Kardon FA3000X Vacuum Tube Receiver Amplifier For Parts / Repair. Meet the Harman Kardon FA3000X, a mid-1960s vacuum-tube powerhouse that delivers warm, golden-age hi-fi vibes with serious vintage swagger. Loaded with classic tubes and about 15 watts per channel of smooth analog magic, this Award-Series receiver brings Harman Kardon’s legendary early-era engineering straight into your listening room. Perfect for tube lovers, vinyl heads, and anyone craving retro sound with modern bragging rights-this glowing beauty is pure audiophile time-travel. Power Output: 15 Watts Per Channel into 8? (Stereo). Frequency Response: 15Hz to 70kHz. Total Harmonic Distortion: 1%. Input Sensitivity: 3mV (MM), 125mV (line). Signal to Noise Ratio: 60dB (MM), 75dB (line). Speaker Load Impedance: 8? To 16? Dimensions: 16″ x 14″ x 7. Listing and template services provided by inkFrog.

The stock circuit had four 6550 output tubes in parallel push pull. Stamped codes on base are FT5426433 and 138243E. Please ask questions if you have any. Item has finish imperfections and wear. Only what is pictured and described is included – if unclear, then ask to clarify.

The Rare Vintage Harman Kardon Ballad A230 Integrated Tube Amplifier is a highly sought-after piece for collectors and enthusiasts of vintage audio equipment. Made by the renowned brand Harman Kardon in the United States, this amp combines a sleek design with top-notch sound quality. The A230 model is known for its exceptional performance and is a rare find for those looking to add a piece of audio history to their collection. Unit is tested and working perfectly, pictures are of actual unit! 15 watts per channel into 8? (stereo). 3mV (MM), 300mV (line). Signal to noise ratio. 60dB (MM), 70dB (line). 1 x GZ34, 4 x EL84, 2 x ECC82, 3 x ECC83. 13-13/16 x 4-5/8 x 11-1/2 inches.

Harman Kardon Trio A224 Vintage Tube Amplifier Classic Audio Model A224.

Harman Kardon Allegro A10 Tube Amp Audio Amplifier Mono. The Harman Kardon Model A-10 Allegro is an AC operated 5 Tube 3 Channel Audio Amplifier. Untested, assume not working. Need additional tubes to run it. Power type and voltage. Alternating Current supply (AC) / 105 – 125 Volt. This model requires external speaker(s). 10 W 16 W max. 12 x 4 x 6 inch / 305 x 102 x 152 mm. Thanks for considering?? Be sure to check out our other vintage electronics for sale!

Actual 1957 Tube amplifier photographed. 1957 top of the line.

Harman Kardon Allegro A10 Tube Amp Audio Amplifier Mono. The Harman Kardon Model A-10 Allegro is an AC operated 5 Tube 3 Channel Audio Amplifier. Untested, assume not working. Need additional tubes to run it. Power type and voltage. Alternating Current supply (AC) / 105 – 125 Volt. This model requires external speaker(s). 10 W 16 W max. 12 x 4 x 6 inch / 305 x 102 x 152 mm. Thanks for considering?? Be sure to check out our other vintage electronics for sale!

Turns on and sounds good to me.

Actual 1957 Tube amplifier photographed. 1957 top of the line. Open to fair offers.