Heed Abacus S DAC

The Heed Abacus S DAC (digital to analogue converter) is an exquisite tool for the task, connecting you to the world of the musician, doing the precise calculations needed for the mutual understanding. Being a gateway between the digital and analogue worlds, the Heed Abacus S is not only a computing machine, it is the very source of the analogue sound that is then amplified through your system. This sound needs to be fascinating right from the beginning, isn’t it?

The Heed Abacus S DAC can interpret this seductive Heed sound from a great variety of digital sources, even if the music is coded in extremely highly detailed PCM or DSD signal.

PCM and DSD are the two main methods for digital recording. The Abacus can handle PCM signals up to 384 kHz and 32 bits, and natively processes the double speed DSD. Quartz based clocks and well-designed linear power supplies ensure that the resolution of digital processing is always perfect.

The analogue buffer stages of the Abacus are made of discrete components, to allow the best possible first steps for the analogue signal.

Features

5 digital inputs: Coax, BNC, 2 x Optical, USB
Native DSD128 and 384kHz/32bit capable USB connection
Isolated analogue and digital sections
Optional Network Streaming Card

Specifications

Inputs: 1x RCA / 1x BNC / 2x Optical / 1x USB / 1x expansion card
Outputs: 1x line level analogue
Output level: 2.1 Vrms
Freq. response: 3 Hz – (depends on sampling frequency)
DSD filter freq.: 50 kHz standard Scarlet Book
Sampling frequencies (BNC, RCA, opt.): 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz max. 24 bit PCM
Sampling frequencies (USB): 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz max. 32 bit and 2.8224 / 5.6448 MHz 1 bit native DSD
Max. consumption: 50 VA
Weight: 6 kg
Dimensions (WxHxD): 22 x 8.5 x 36 cm

Heed Abacus S Owner’s Manual

Optional Network Streaming Card Guide