Pioneer Spec System Home Audio Vintage 1976 Spec-1 Spec-4 SG-9500 TX-9500 II PL-560 DT-530 RG-1 RT-707 For sale is a rare vintage 1976 Pioneer Spec System Hi-Fi home audio. Includes spec-1 pre-amplifier and spec-4 amplifier and both were serviced recently for this listing. Also include the TX-9500 II tuner amplifier, SG-9500 equalizer, the reel to reel player/recorder RT-707 (counter doesn’t roll). The RG-1 dynamic processor, DT-400 digital alarm clock recorder, the PL-540 turntable and a pair of the very rare HPM-1500 speakers. In very nice functioning condition with minimum wear. In the pictures listed the spec-2 is now replaced with the spec-4 and the PL-530 replaced with PL-540