So to keep my mind occupied I put this stack together:
Comparing amps to drive the most difficult headphone to date, the ModHouse Tungsten DS, 76 db sensitivity, 155 ohms.
It likes gobbs of power, and EMF....for those in Rio Linda thats VOLTS! :>)
GoldenSound stated an amp that can deliver 20 volts is good enough for normal listening levels.
30 Volts if you want ear bleed levels...unsafe, dont do it!
Well I tested several amps and compared with Schiit, Midgard, Vali3, Mjolinr 3 (not in this pix), the PassLabs HPA-1 and a 2 Ch Van Alstine 6CA7 based
tube amp.
Using a 1 KHz test tone, measuring the SPL with my homebrew SPL adapter I measured these SPL levels:
Midgard: 80 db
Mjlonir 3 : 83 db
Vali 3: 88db (Yes Vali 3 did 88db!)
PassLabs: 73 db
Now listening to a 1Khz test tone is not listening to music for sure.
This small experiment told me that you do not need a $4K tube amp to make these cans sing..
The Schiit Midgard and MJ3 and Vali 3 in that order were my musical listening preference.
Midgard was best in HIGH gain with the volume knob at the 3pm + position.
No clipping, no distortion, and it was LOUD enough to cause me to turn it down often.
I will also comment on the low cost Schiit Modius E vs the $1200 Soekris 2541 highly touted sign dac.
Both great dacs, but a noticeable difference in sound stage and voicing...
My preference was with the lower cost Schiit Modius E dac...the main difference to me was the Modius had a more tonally neutral
presentation than the Soekris.
YMMV.
Cant wait to get a Gugnir 2 here to contrast!
Fun to test, play and compare with ones own ears!
Alex
:>)
Also tested with Rad "0"s...All of the amps can handle the Rad 0's very well....much easier to drive.