EICO HF-12 Mono Integrated Tube Amplifier – Modified, Tested, Great Sound. A classic mono integrated amplifier from EICO’s golden era, the HF-12 is well regarded for its musical EL84 output stage and straightforward, no-nonsense design. Tested and fully functional at time of evaluation. Modified to use a solid-state rectifier in place of the original EZ81 tube. Provides more stable operation and consistent voltage. Evidence suggests some of the capacitors were replaced in the past by the prior owner. Exact timing and scope of this work are unknown, but several current capacitors do not look like original factory capacitors. A full recap is recommended for long term reliability. Three 12AX7 tubes (installed and included). Brand may vary but all tested strong, no shorts and gas detected. Old tubes were all replaced for reliable performance. Classic EICO iron and EL84 sound signature. Strong, engaging mono presentation-excellent for vintage speakers. Clean cosmetics consistent with age. Some corrosion typical of age. Solid platform for continued enjoyment or future restoration. This is a vintage tube amplifier.

The Rare Vintage Knight Tube Hi-Fi Integrated Amplifier/ Selector Equalizer is a sought-after piece of vintage audio equipment known for its high-quality sound and unique design. This Tube Amplifier by Knight offers a blend of vintage charm and modern functionality, making it a standout addition to any audio collection. With its integrated amplifier, selector, and equalizer capabilities, this rare vintage piece delivers a rich and dynamic listening experience that is sure to impress audiophiles and collectors alike.

Please reference photos and condition notes above. The guts on this model are the same as the Pioneer SX34. This Knight model was re-branded for sale. This particular unit has (2) Matushita 12AX7 Tubes and 4 ECL82 Tubes. Unit is powered, tested, and working. Scanned the FM band and adjusted volume during test. Overall good functional condition. Powers on and works. Audio output and FM band were tested. Overall good to fair cosmetic condition.

Please reference photos and condition notes above. The guts on this model are the same as the Pioneer SX34. This Knight model was re-branded for sale. This particular unit has (2) Matushita 12AX7 Tubes and 4 ECL82 Tubes. Unit is powered, tested, and working. Scanned the FM band and adjusted volume during test. Overall good functional condition. Powers on and works. Audio output and FM band were tested. Overall good to fair cosmetic condition.

Correction: This amplifier is an EICO HF-32, not an HF-81. The listing has been updated accordingly. Vintage EICO HF-32 integrated tube amplifier paired with matching HFT-90 FM tuner, classic American hi-fi components from the golden age of tube audio. Featuring mid-century industrial design, point-to-point tube architecture, and collector-grade aesthetics, this untested EICO amplifier and tuner set is ideal for vintage audio restorers, tube amp collectors, and enthusiasts seeking authentic 1950s-1960s high-fidelity equipment. Models: HF-32 Integrated Amplifier & HFT-90 FM Tuner. Model identification has been carefully verified against chassis markings and faceplate labeling. Era: Late 1950s-Early 1960s. Type: Vacuum tube hi-fi components. Condition: Untested / As-Found. Included: Amplifier + Tuner only (no accessories). Stereo (2-channel integrated amplifier). Country of Manufacture: United States. Some machines are built to be used. Others are built to be. This pair belongs to the latter. The EICO HF-32 is a well-regarded integrated tube amplifier from the American hi-fi era, appreciated for its musical warmth, straightforward design, and the unmistakable character that early tube circuits deliver. It is the sound of living rooms where jazz records spun late into the night, where voices came through the air with presence and humanity, not compression. Paired beside it is the EICO HFT-90 FM Tuner, a companion piece that completes the picture – a reminder of a time when radio was not background noise, but an event. Together, they form a visual and historical symmetry that collectors seek but rarely find intact. Look closely and you’ll see the story written in metal and paper: the perforated steel cages, the understated typography, the surviving schematic labels still clinging to the underside like handwritten notes left behind by the engineers who built them. They are the difference between equipment and artifact. This set has not been powered on. Tube audio collectors understand that preservation comes before assumption, that restoration is a personal journey best left to the next steward. What is offered here is honesty – untouched, unaltered, and ready for the hands of someone who understands what they are holding. This is not a shortcut to sound. It is an invitation to history. Professionally packed with care appropriate for vintage electronics. The HF-32 occupies a respected place in EICO’s tube amplifier lineup for a reason. HF-32 is often spoken of in reverent tones for a reason. It occupies that rare intersection of engineering excellence, musicality, and aesthetic restraint that modern equipment rarely attempts. When paired with its matching tuner, it transcends utility and becomes a statement – a moment frozen in the golden age of American hi-fi. Opportunities to acquire a matching EICO amplifier and tuner pair, preserved in this state, do not present themselves often. This is a piece for the collector who values authenticity over convenience, and legacy over immediacy. Collectors familiar with EICO’s lineup will recognize exactly where this piece fits.

Cosmetically in good shape but shows signs of its age. It will be well packaged very well. The Eico HF 81 Vacuum Tube Stereo Integrated Amplifier is a vintage audio component that offers a classic sound experience. This unit, designed by EICO, is a tube amplifier with the model number Eico HF 81. While untested, this piece of vintage electronics holds the potential to deliver high-quality audio performance and add a touch of nostalgia to any audio setup. The included manual provides insight into the operation and maintenance of this unique amplifier, making it a valuable addition to a vintage audio collection for audiophiles and collectors alike.

Cosmetically in good shape but shows signs of its age. It will be well packaged very well. The Eico HF 81 Vacuum Tube Stereo Integrated Amplifier is a vintage audio component that offers a classic sound experience. This unit, designed by EICO, is a tube amplifier with the model number Eico HF 81. While untested, this piece of vintage electronics holds the potential to deliver high-quality audio performance and add a touch of nostalgia to any audio setup. The included manual provides insight into the operation and maintenance of this unique amplifier, making it a valuable addition to a vintage audio collection for audiophiles and collectors alike.

Vintage FISHER X-202C INTEGRATED TUBE AMP AMPLIFIER (PART or REPAIR). NOT WORKING (PART or REPAIR).

Vintage Eico ST-70 Stereo Integrated Tube Amp Amplifier, For Parts Or Repair.

This is for a vintage Eico model HF-20 mono tube amplifier which uses a pair of 6L6 output tubes. It has various EQ curves for correctly playing various brands of 78 RPM records. It weighs approximately 23 lbs. It has NOT been tested, and will require restoration before use (new capacitors at a minimum). It appears to be complete, and original inside. You will receive the amplifier shown.