EICO HF-90 vintage FM tube tuner, a classic American hi-fi component from the golden era of vacuum tube audio. Manufactured by Electronic Instrument Co. In the USA, this tuner is sought after by collectors and restoration enthusiasts for its period-correct design and compatibility with vintage tube amplifier systems. Ideal for pairing with classic integrated amps such as the EICO HF-32. Type: FM Tube Tuner. Output: Audio line output. Note: This listing is for the EICO HF-90 FM Tube Tuner only. Vintage EICO HF-90 FM tube tuner, a classic piece of American hi-fi history. Designed to pair with tube amplifiers, this tuner offers a timeless mid-century look and is a great candidate for restoration or integration into a vintage audio system. Cosmetically solid with original components and dial. Shows normal wear consistent with age. Unit has not been powered on or tested. Looking for the matching amplifier? Check out my tube amp listing for the EICO HF-32 to pair with this tuner. The HF-90 is a well-regarded tuner among vintage hi-fi enthusiasts and is commonly paired with EICO tube amplifiers to complete a period-correct system.