Complete set Sony TA88 & ST-88 & SQA-100 Very rare set with all items. Wood cases are in very good condition with minor marks (see pictures for the best impression). All lights are working and sound quality is good. Sony TA-88 - Integrated Stereo Amplifier (1972-76) Specifications Power output: 13 watts per channel into 8Ω (stereo) Frequency response: 15Hz to 50kHz Sony ST-88 - Stereo AM/FM Tuner (1973-76) Specifications Type: Mono/Stereo Tuner Tuning Bands: FM, MW Tuning Scale: Analogue FM Tuning Range: 87.5 to 108 MHz MW Tuning Range: 530 to 1605 kHz Sony SQA-100 - SQ Decoder/Amplifier (1972) Description Sony invites you to a new era of listening pleasure via our SQA-100 Decoder/Amplifier. It provides Stereo Quadraphonic sound reproduction from SG, other type matrices and discrete four-channel programs with any stereo equipment. The original ambience of concert-hall music comes from the reflected sound that has hit the walls, and ceiling and bounced back to the listener. With this ambience the music is rich and brilliant with profound spatial feeling. Two-channel stereo gives us this sense of presence to some extent, but it is not sufficient. By reproducing sound over four widely separated speakers, four-channel stereo not only provides the direct sound, but also recreates the ambience pattern as it actually exists in a concert hall. Further more, four-channel stereo also gives composers and recording directors a tool to create new musical effect by enveloping the listener with 3600 sound. Through the study of four-channel psychoacoustics, CBS laboratories developed the "SQ" coded matrix system, and Sony has developed the hardware which can get the utmost from the SQ system. The SQA-100's special matrix circuit enhances channel separation to localize the musicians or instruments where they belong. So you will hear music indistinguishable from the original sound and feel that you are actually in the concert hall. Specifications Power output: 2 watts into 8 ohms Frequency response: 20Hz to 50kHz Circuit system: SQ matrix 4-channel decoder (blend matrix system) Dimensions: 128 x 231 x 197 mm Weight: 3 kg