S8 vs Willsenton R800i
The R800i's power @ 8ω is 48W against the S8's 24W and its power @ 4ω 48W against 24W. Both share output impedance (4Ω) and input impedance (100000Ω).
AI-generated product photo — not official manufacturer imagery.
AmplifiersIntegrated AmplifiersTube AmplifiersPhono Pre-Amps
About the S8
The Unison Research S8 is a high-end integrated tube amplifier designed with a Class-A, single-ended architecture using two 845 power tubes and three ECC82/12AU7 preamp tubes. It delivers an output power of approximately 2 x 24 watts into 8 ohms or 4 ohms. The amplifier includes a built-in phono preamp and offers 5 RCA line-level inputs plus one tape output. The input stage is built on three sub-triodes ECC 82, and the output stage uses the famous triode 845 tubes. The power supply circuit is based on discrete elements, and the output transformers are bright and water-cooled, rated at 24 watts. The unit weighs about 30 kg and measures 420 x 440 x 260 mm. It comes with a remote control and features rare and expensive Westinghouse 845 tubes in some versions. The S8 is known for its high build quality and musical performance, typical of Unison Research's craftsmanship.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 24W @ 8Ω
- Power @ 4Ω
- 24W @ 4Ω
- Amplifier Class
- A
- Minimum Impedance
- 4Ω
- Input Impedance
- 100000Ω
- Max Input Voltage
- 2.0V RMS
Analog Output
Analog signal output specifications
- Output Voltage
- 2.0V RMS
- Output Impedance
- 4Ω
Phono Preamplifier
Phono stage specifications
- Adjustable Loading
- No
Connectivity
Input and output connections
- Analog Inputs
- RCA
- Analog Outputs
- tape out
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 420 × 440 × 260 mm (W × H × D)
- Weight
- 30 kg (66 lbs)
Key Specifications
Power: 24W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions