T100MPA Mono Power Amplifier
Developed from the acclaimed T100SPA, the T100MPA places Quiescent’s patented QPower architecture inside a dedicated single-channel chassis. Each monobloc is designed to preserve the musical signal as it is transformed into loudspeaker control: stable, accurate, fast, unforced and unusually quiet.
The Ear included the T100MPA in its Best Hi-Fi of 2023 and described Quiescent’s approach as unique.
Best power amplifier 2023
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Performance
The T100MPA is the mono expression of Quiescent’s T-Series amplifier design. Each channel has its own 31kg chassis, power supply and expanded QPower noise-control architecture, giving the amplifier pair the composure expected of reference systems.
Rather than adding weight or spectacle, the T100MPA is built to remove the disturbances that blur timing, phase and tone. Music retains its scale without losing fine structure; loudspeakers are driven with authority, but the presentation remains open, stable and unforced.
Technology
Power amplifiers are asked to turn a delicate signal into the energy needed to control a loudspeaker. In that transition, vibration and EMI/RFI can be generated inside the power supply, ground plane, output stage and by the loudspeaker load itself.
QPower is Quiescent’s patented approach to managing this unwanted energy before it can circulate through the signal path. The T100MPA extends the architecture used in the T100SPA, applying seven proprietary modules across the monobloc design. A further five modules are deployed in the signal in and out paths to ensure any self-generated vibration and noise is minimised, thus avoiding damage to the signal itself.
Specifications
Rated at 130 watts into 8 ohms and 200 watts into 4 ohms, with a minimum load impedance of 2 ohms, the T100MPA is designed for loudspeakers that ask more of an amplifier than headline wattage alone.
Continuous current delivery of more than 10 amps, a wide 0.5Hz to 600kHz frequency response and signal-to-noise performance better than 120dB support an amplifier whose authority is felt through grip, timing and quietness rather than force.
WBT nextgen silver conductor binding posts and switchable RCA/XLR inputs complete a signal path designed for low resistance, low disturbance and long-term system matching.
Technology
Power amplifiers are vulnerable to the conditions they create. Transformers, capacitors, inductors, voltage regulation, output devices and speaker loads can all introduce vibration or high-frequency noise. Left unmanaged, this energy can intermodulate with the music signal, reducing timing clarity, tonal completeness and spatial precision.
The T100MPA addresses this at multiple points. Its QPower architecture is deployed through seven proprietary modules, including the d.c. supply to the audio boards and the extended ground-matrix architecture carried forward from the T100SPA. The purpose is not to filter character into the sound, but to give unwanted energy a controlled path away from the audio circuitry.
The enclosure is part of the system. Machined high-grade aluminium, custom Quiescent heatsinks and a non-metallic top plate are used to manage heat, vibration and electrical behaviour without relying on prefabricated casework.
With noise controlled more comprehensively, the amplifier’s core architecture can operate with speed, bandwidth and phase stability intact. The audible result should be described with restraint: not a larger-than-life sound, but less obstruction between recording and listener.
Specifications
Audio Outputs
Minimum Load Impedance
2 Ohms
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
Better than 120dB
Terminals
WBT nextgen™ Ag Silver conductor binding posts
Audio Inputs
Input Impedance
10kΩ
Sockets
2 x WBT nextgen™ Ag Silver phono OR
2 x silver 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 and non metallic top
Cooling
Passive custom-built Quiescent heatsinks
Dimensions (HxWxD)
140 x 440 x 400mm
Weight
31kg
Power
Input
230V, 50Hz
