Instruction Manual for DAC3 HGC and DAC3 L with 2.X Firmware Page 33
DAC2 L
The DAC2 L is identical to the DAC2 HGC
except that the DAC2 L has no headphone
amplifier.
DAC2 D
The DAC2 D is identical to the DAC2 HGC
except that the DAC2 D has no analog inputs
and no 12V trigger.
DAC2 DX
The DAC2 DX replaced the DAC2 D. The new
model added an XLR digital input and the 12V
trigger. It also added a second output bus so
that one set of outputs could be placed in
calibrated mode while the other was controlled
by the volume knob.
DAC3 Series
On the surface, the DAC3 series converters
look exactly like the DAC2 converters. They
have the same controls, the same connectors,
and even the similar-looking circuit boards.
The difference is that many critical
components and systems have been upgraded.
The new DAC3 delivers lower THD, improved
digital filtering, and faster PLL lock times.
The firmware, digital signal processing, and
UltraLock™ clock system have all been
upgraded in the new DAC3. Most notably, the
DAC3 series includes the new ES9028PRO D/A
converter. This groundbreaking D/A converter
IC offers several significant improvements over
the ES9018 converter used in the DAC2
series. Until the ESS PRO series was
introduced, the ES9018 was the highest
performance D/A converter IC available. The
ESS PRO series converters are now setting this
benchmark. The Benchmark DAC3 is one of
the first products to feature this new 32-bit
D/A converter.
Benchmark's ultra-clean analog stages, low-
jitter UltraLock3™ clock system, and high-
headroom DSP leverage the full capabilities of
the new ESS PRO series converters.
DAC3 vs. DAC2
The DAC3 series adds the following
improvements over the DAC2 series:
• ESS SABRE-PRO D/A Conversion
• UltraLock3™ clock system
o Instantaneous lock
o Instantaneous input switching
• THD reduction system
o 2nd-harmonic compensation
o 3rd-harmonic compensation
• Improved digital filters
o Lower passband ripple
o Flatter frequency response
• Higher maximum output level
• Increased Dynamic Range
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