Thesis Alpha analogue and digital pre-amplifier

Two analogue, four digital inputs (including USB 2.0)
Upgradeable analogue power supply (see Thesis Pi)
Upgradeable DAC and USB section

The Thesis α (alpha) preamplifier sports two analogue and four digital inputs including S/PDIF, TOSLINK, BNC and USB. All inputs, as well as volume setting with muting function are remote-controllable via an RC handset. A twin RC-coupled output stage caters for driving long cables and connecting even two sets of power amplifiers to drive speakers in bi-amp configuration. The analogue section of the thesis α (alpha) can be fed by the Thesis π (pi) twin power supply  which can also supply the φ (phi) phono stage with power simultaneously.

The analogue circuit of the Thesis α is a completely new design, while the digital section based around our Dactil 2.1 DAC and USB 2.0 modules (by using card slots both modules are upgradeable in the future) is an enhancement of our exceptional Obelisk DA digital-to-analogue converter – "one of the finest USB DACs I have had the pleasure to audition, probably at any price”, attested the renowned journalist Malcolm Steward in Hi-Fi Choice. And this world-class performance is surpassed by the Thesis α!

The Thesis α (alpha) preamplifier has been lovingly crafted internally by the craftsman at Heed and is immaculate in conception in the flesh too. The casing is finished to the highest standard with the smoothest of black powder coated finishes and discrete wrapped sides. The extruded aluminium fascia fits onto the casing with ultra precision and the source selection and volume controls are twinned to the fascia with a luxurious weighted feel. The front panel has back lit white indicators for a 'retro-futuristic' feel, akin to classics of the past and even an ornate art deco piece. The Thesis α (alpha) also has remote control source and input selection and attentuation for volume control too.

Heed Audio Thesis Alpha: Pre-Amplifier with DAC - Features & Benefits:

Two analogue, four digital inputs (including USB 2.0)
Upgradeable analogue power supply (see Thesis Pi)
Upgradeable DAC and USB section
Fully remote controllable
High quality casing and fascia
Remote control with input switching

Technical Data

Inputs: 2x analogue / 1x S/PDIF RCA / 1x S/PDIF BNC / 1x USB / 1x TOSLINK

Outputs: 2x preamplifier output / 1x tape out

Supported upgrade cards: DAC 2.1 / USB 2.0

Power supply options: Internal / Thesis Pi

Max. consumption: 60 W

Dimensions (WxHxD): 22 x 8.5 x 36 cm

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