T100SPA Stereo Power Amplifier
The T100SPA is a stereo power amplifier built around a simple principle: an amplifier should add as little noise and character as possible while maintaining firm control of the loudspeaker.
Rated at 130W per channel into 8 ohms and 200W per channel into 4 ohms, it combines high bandwidth, adaptive bias control and Quiescent QPower technology to deliver power with speed, stability and a very low noise floor.
The Ear review highlights the T100SPA’s exceptional quietness, timing and ability to reveal low-level musical information.
Jason Kennedy reviews the T100SPA
A stereo amplifier with quiet authority
The T100SPA is a stereo power amplifier built around a simple principle: an amplifier should add as little noise and character as possible while maintaining firm control of the loudspeaker.
Rated at 130W per channel into 8 ohms and 200W per channel into 4 ohms, it combines high bandwidth, adaptive bias control and Quiescent QPower technology to deliver power with speed, stability and a very low noise floor.
Performance
The first impression is quietness. Not quietness as a slogan, but the absence of noise that lets tone, timing and recorded space become easier to follow. Soft passages remain intact. Crescendos retain scale without hardening. Images form naturally, with low-level information emerging without being pushed forward.
The T100SPA is intended for listeners who value clarity, dynamic control and musical timing without added emphasis. It is powerful enough for demanding loudspeakers, yet its character is defined less by force than by composure.
Technology
The T100SPA uses a high-bandwidth current-feedback architecture, low-inductance MOSFET output modules and a deliberately short signal path. Digitally controlled adaptive bias calibration keeps the amplifier boards operating consistently as mains conditions vary.
The mechanical design is treated as part of the circuit. Vibration-isolated transformers, independent channel heatsinks, carefully selected power-supply components and Quiescent QPower technology are used to reduce the paths by which electrical and mechanical noise can return to sensitive stages.
Specifications
The 27 kg chassis is not simply an enclosure. Its custom-built heatsinks provide efficient passive cooling while helping to dissipate unwanted vibration. Silver conductors and connectors are used through the signal path, supporting stable, low-noise power delivery into demanding loudspeaker loads. Every panel is designed and manufactured in-house to the tolerances required for the enclosure to play an active role in the amplifier’s performance.
Technology
The Quiescent T100SPA is a high-performance stereo amplifier that delivers fast, precise, and engaging sound. Its design focuses on keeping the music clean and free from unwanted noise, especially vibrations that can blur details or reduce dynamic energy.
This is achieved through several measures, including a quiet, high-quality power supply with specialised transformers, careful vibration protection around sensitive electronics, separate channels with independent heatsinks, and premium components in the power supply and filters. The QPower™ system further reduces vibrations and electrical noise, ensuring the signal remains pure even under the most demanding conditions.
The digitally controlled adaptive bias control ensures that the amplifier boards operate exactly as needed to give consistent and unwavering performance regardless of the supply of the voltage at the mains socket.
The amplifier’s carefully designed case and heatsinks also prevent vibrations and electrical interference, while advanced current-feedback circuitry and high bandwidth ensure the music is detailed, precise, and transparent. Together, these features produce a wide, accurate soundstage with exceptional depth. This is because the T100 has an extremely low noise floor, allowing you to hear every subtle nuance and emotion in the recording.
Specifications
Audio Outputs
Minimum Load Impedance
2Ω
Power Output (rms)
130W per channel into 8Ω
200W per channel into 4Ω
Gain
26.5dB
Frequency Response
-3dB at 0.5Hz to 600kHz
Slew Rate
91V/us
THD @24W output into 8Ω load
(1kHz sinusoidal signal)
0.03%
S/N Ratio
120dB
Terminals
WBT nextgen™ Ag Silver conductor binding posts
Audio Inputs
Impedance
10kΩ
Sensitivity
1.6V
Sockets
2 x WBT nextgen™ Ag Silver conductor phono or 2 x silver conductor XLR (switchable)
Grounding
Chassis
M5 Binding post on rear panel
Signal
RCA socket on rear panel
Casework
Finish
Bead blasted natural or black anodised high grade aluminium with high-impedance
non metallic top
Cooling
Passive custom-built heatsinks
Dimensions (HxWxD)
140 x 440 x 400mm
Weight
27kg
Power
Input
230V, 50Hz
