Heed Thesis Alpha DAC-Pre

A new thesis on music reproduction from Heed Audio. 

The thesis 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 our new RC handset. A twin capacitor-coupled output stage caters for driving long cables and connecting two sets of power amplifiers to drive speakers in bi-amp configuration. The analogue section of the thesis Alpha is fed by the thesis Pi twin PSU which can also supply the Phi phono stage with power simultaneously.

The analogue circuit of the thesis Alpha is a new design from scratch, 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 With its very generously sized power supply, unlike valve amplifiers, it is also extremely stable even into the most difficult loads – continuous power delivery up to 160W or capability of driving loads down to 1.6 Ohm speak for themselves. It is capable of driving all kind of speakers except those with very low efficiency. 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 Hifi-Choice and Top Audio Gear. And this world- class performance is surpassed by the thesis Alpha!