MSB Overdriving Amp Input?

Bretson

Well-Known Member
Jun 28, 2020
22
30
93
38
Red Deer, Alberta, Canada
Hi Guys,

I have been trying to work through something. I have an MSB Discrete with 2 psu's and love the overall build and design. The SQ is also amazing and the unit itself is rock solid in operation. I have found however that it doesn't play nice with all amplifiers.

I recently picked up a TAD M2500 amplifier and connected it as usual and the amp immediately went into protection mode. I thought at first that i was merely sent a dud but then i figured i would experiment a bit. It seems to be working when connected to anything other than the MSB. This is not the first time i have had this happen either. I have also had a Vitus ss010 do the same thing. When connected to the merason dac1 mk1, there was no issues. When connected to an Auralic Vega G2, no issues. When connected to the msb in amplifier mode, it immediately went into protection mode. when in integrated mode, it was strained and when turned up, it shut down also.

Amps that i have in house that work well with MSB:

Burmester 036 (The best sound of all pairings imo)
Pass Labs 30.8 (No bass in this pairing)
Luxman 590aii
Audionet WATT
MSB S202 (Excellent sound also, but not as good as burmester)
Vinnie Rossi L2iSE

Amps that go into protection Mode:
Vitus SS010
TAD M2500

Maybe i have some electric gremlins in my house but i also tried connecting the Pre output of the Vinnie Rossi into the burmester for fun and it sent it into protection mode. Synergy is obviously key here but its not obvious to me how to diagnose this ahead of time prior to purchasing. Has anyone else run into this? Specifically with MSB.
 
I’m not sure but I’m guessing it can be due to negative and earth connections. If TAD 2500 has a floating negative and MSB doesn’t may cause shorting amp’s negative to ground. Most amplifiers have negative connected to ground, especially single ended amps, but some have floating negative, same as positive.
 

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification. Founded in 2010 What’s Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals, we enjoy learning about new things and meeting new people, and participating in spirited debates.

Quick Navigation

User Menu