to your opinion will my pro amplifier in the Benchmark DAC2 drive all those phones to perfection? at least good quality?
Benchmark strong point always been their Dac implementation, the headphone amp is not at the same level in my opinion. It will be able to power the other headphones, but with cans such as Hifiman HE-500 and up i doubt it.
With the attenuator off the DAC1 claims +27dB of gain which will be more than enough to drive the LCD-3 and PS1000. I cannot find the specs for the DAC2, but I imagine it will be on par with the DAC1 output levels. You will be running at 90% volume, but it should get the job done.
at +18 dBu, 250 mA you should get to 110 dB SPL with HE6 - quite adequate peak SPL for almost any listening, if not the 120 dB peak you may want to see in a "ultimate" system
the Benchmark headphone out should push the other 2 to 120 dB SPL if thats your magic number
HPA2TM Headphone Outputs
Number of Headphone Outputs 2
Output Connectors ¼” TRS with switch on left-hand jack
Output Impedance < 0.11 Ohms
Output Level Control Stereo Control on Front Panel
Output Level Range (at 0 dBFS) into 60-Ohm Load Off to +17 dBu
Maximum Output Current 250 mA
Overload Protection (independent per channel) Current limited at 300 mA, Thermal
Bandwidth > 500 kHz
THD+N -106 dB, 0.0005% into 30 Ohms at
+18 dBu (1.26W)
sorry to dig this up, would the new benchmark dac2 be able drive the he-500 properly? loud is one thing, would the he-500 be able to shine? thanks in advance!