Instruction manual

DAC2 DX Instruction Manual Rev A Page 16
DAC1 and DAC2 Product History
The pristine audio performance of the award-winning DAC1 made it the ‘Benchmark’ of stand-alone
D/A converters. The DAC1 USB and DAC1 PRE, and DAC1 HDR added features and minor
performance improvements.
DAC1 Series History
The classic DAC1 was the first member of the Benchmark DAC1 family.
The DAC1 introduced:
 The 1/2-wide 1-RU form factor
 UltraLock™ Jitter attenuation
 Passive output attenuators
 Analog volume control
 HPA2™ Headphone amplifier
The DAC1 USB added:
 The first 96 kHz/24-bit USB audio input
 Headphone switch
 Headphone gain jumpers
 High-current LM562/LME49860 output drivers
 Low-Impedance passive output pads
The DAC1 PRE added:
 A stereo analog input
 3 S/PDIF digital inputs
 LM4562/LME49860 opamps throughout
 Premium Teflon-insulated bulkhead-mounted RCA connectors
The DAC1 HDR added:
 IR remote-control
 HDR™ motor-driven volume control
 MUTE feature
 DIM feature