Audison Thesis TH Quattro Amplifier Class A 4 Channel Stereo Amp 1040w RMS

The Audison Thesis TH quattro is a 4-channel Class A car amplifier producing 1040W RMS total power (4 x 260W RMS at 2 ohms), with microprocessor control, selectable bias presets and integrated 24-bit/192kHz digital inputs. It is part of Audison's flagship Thesis amplifier range.

The TH quattro is the 4-channel model in the Thesis range. The Thesis range is also available as the 2-channel Audison Thesis TH due and the mono Audison Thesis TH uno.

Key specifications

• Channels: 4
• Total power: 1040W RMS
• Output: 4 x 160W @ 4 ohm, 4 x 260W @ 2 ohm, 4 x 340W @ 1 ohm
• Bridged: 2 x 500W @ 4 ohm, 2 x 700W @ 2 ohm
• Dual Power Mode, A Class: 4 x 55W @ 4 ohm
• Inputs: pre-in, S/PDIF optical (up to 192kHz/24-bit) and AD Link
• Bandwidth: 5Hz–70kHz (-3dB)
• S/N ratio: 104dBA; THD 0.03%
• Fuse: 100A

Thesis: beyond the absolute

Thesis amplifiers build on the knowledge developed with the HV venti, combining the highest level of analogue technology with advanced digital features in a single unit. The synergy with Full DA HD technology takes in-car listening to a new level of excellence. The TH quattro is fully adjustable and entirely managed by an internal microprocessor, allowing limitless system configurations.

• Complementary differential circuitry with current mirror.
• Cascode A Class driver with inverted complementary triplet power stages.
• Integrated 24-bit/192kHz Hi-End DA converters.
• Compatible with Audison Full DA HD technology; Hi-Res audio files listening certified.
• S/PDIF and AD Link optical digital inputs managing up to 8 digital channels on RJ-45 connector.
• Dual Mono Construction with four power supplies in Synchro-PWM configuration.
• Sensitivity control with 256-step resistive switching for 120dB resolution.
• Energy Saving, Hi-Current, Hi-AB Class and A Class bias presets selectable in real time.
• Digital control via integrated settings panel, DRC and PC Software.
• High-quality crossover module supplied.
• Chassis extruded from solid aluminium and machined using CNC.

Full DA HD

Pure digital signal transfer at resolutions up to 24-bit/96kHz.

Hi-Res audio

The TH quattro exceeds the 40kHz bandwidth analogue requirement defined by JAS (Japan Audio Society), delivering 5–70kHz (@ -3dB, 2 VRMS, 4Ω).

Digital inputs and outputs

The S/PDIF optical input allows direct connection to digital sources and can re-launch the digital signal to other Thesis amplifiers via the AD Link (Audison DigitalLink) system. Each amplifier features 192kHz/24-bit PCM D/A conversion through a high-quality converter.

Bias control

Four presets are selectable: Energy Saving, Hi-Current, Hi-AB Class and full A Class operation.

Removable crossover

Inherited from the HV venti, the complete crossover circuit is removable, maximising the TH quattro's versatility as a high-end sound quality solution.

Dual Mono construction

Four Synchro-PWM power supplies deliver a very fast transient current response and enable a true Dual Mono configuration.