The TX-9800 RF amplifier 2-stage front end incorporates a 5-gang variable capacitor and three dual gate MOS FETS. A capacitance controlled double tuned circuit is inserted between the RF amplifier stages. Those features produce impressive characteristics such as an IHF sensitivity of 8.8dBf, a spurious response of over 110dB and an image interference ratio of over 120dB. Specifications Type: Mono/Stereo Tuner Tuning Bands: FM, MW Tuning Scale: Analogue Distortion: 0.2% (FM) Frequency response: 20Hz to 15kHz (FM) Dimensions: 453 x 155 x 390 mm Weight: 9.3kg This concerns one of the best tuners ever made and the top-model of Pioneer from that period. The tuner is in excellent condition (almost like new and no scratches) and it is in good working order. Will be sent by registered mail.