Gryphon Diablo 300


On Gryphon's website under the description of the Diablo 300 there is a link to a downloadable operator's manual.  Diablo 300 manual v. 1_Diablo manual.qxd (gryphon-audio.dk)  Page 13 of the Diablo 300 online operator's manual specifies unbalanced input #3 as being configurable to by-pass all preamplifier stages in the.
QUESTION: Can balanced inputs #1 and/or #2 also be configured to by-pass all preamplifier stages in the Diablo 300? Thank you.
a_numberone

Wow, didn't know that it could also be used as a power amp only, wonder if the Diablo 120 can be also.??

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yeah it can.  I’ve done it on mine and went through the ‘blessing/reminder’ to set your preamp volume to low or stop any playback if you decide change back…sigh.

In my case, I couldn’t tell a difference between bypassing the preamp over using the XLR in from a Lumin X1.  To my ears the Gyphon volume attenuation is pretty good, compared to preamp/LeedH.  Ended up using XLR for the extra gain.  
When I had my Gryphon Diablo 120, I tried the input which bypassed the preamp in the 120.  I used the volume control on my Rockna Wavedream Signature Balanced.  The sound was significantly better using the Rockna and bypassing the 120 preamp.  Late last year I discovered the AGD Audion monoblocks.  I run them direct from my Rockna which is better than any amp/preamp combination I have had in many decades as an audiophile.
Btw. Unity gain on a Diablo 120 is 42. Not sure if it’s the same with the 300.