Unison Research – Tonezone Audio https://tonezoneaudio.com Audio Video Home Theater & HiFi in Saudi Arabia Thu, 02 Apr 2026 20:03:06 +0000 en-US hourly 1 https://wordpress.org/?v=5.0.21 https://tonezoneaudio.com/wp-content/uploads/2021/07/cropped-logo-32x32.png Unison Research – Tonezone Audio https://tonezoneaudio.com 32 32 unison research S6 integrated amp / dac – Black Edition https://tonezoneaudio.com/product/unison-research-s6-integrated-amp-dac-black-edition/ Tue, 16 Dec 2025 06:55:08 +0000 https://tonezoneaudio.com/?post_type=product&p=7472

vacuum tube integrated amp in pure class a  Black Edition version is equipped with 3 digital inputs USB,SPDIF and Toslink.

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Tech specs

  • Output power: 40W on 6Ω

  • Signal valves: 2 x ECC83 Gold Lion

  • Output power valves: 3 x KT77 Gold Lion in parallel for each channel

  • Relay Input Selector with Return GND Technology

  • Cathode Capacitor Less (CCL) technology , no autobias

  • Noiseless as a solid-state amplifier

  • Polarisation: pure Class A in ultralinear configuration with tap at 20% (power valves),

  • Bias adjustable for each power valves

  • Inputs: 4 line RCA, 1 USB, 1 SPDIF, 1 Toslink

  • Outputs: 1 subwoofer RCA (stereo)

  • Bandwidth (-1dB): 15Hz – 30kHz

  • Dimensions (x y z): 35 x 49 x 22 cm

  • Weight: 25Kg

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