My system's wrecked!

[Darren]

Im not happy boys!
The Tact TDA2175 power amp that I've loved for so long in my home system has recently developed a dodgy on/off switch, so I've removed it tonight, to send it for service, and dropped in a Pair of Roksan M1 monoblocs which i bought through AOS. Ive also changed the balanced Coherent Systems interconnect between the Wadia 830 and the power amps to a pair of single ended Mark grant MG1000 (the Roksans dont do balanced)
I wasnt prepared for the sheer change in terms of the sound my system produces...... The bass is now soft and flabby (though there is loads of bass), treble is recessed and lacks extension. The soundstage has collapsed and the sense of pace: what sense of pace?
I love my Sonus Faber Grande Pianos but wouldnt buy them again based on this showing.
I live in the North West and previously would have welcomed visiting AOSers to listen to my system but now I'd hide behind the door and wait for you to go.......
Got some tweaks up my sleeve but what a shock!

[John]

Well hopefuly you get the amp serviced and back to the sound you love Darren

[Darren]

Thanks John,
It is actually beginning to sound a bit better ( maybe just acclimatisation) but I cant believe the change in tonal balance from just changing the power amps. :scratch::eek:

[jandl100]

The Lyngdorf amp, like many class D's, has a very high damping factor. Maybe that's needed to keep your SF's bass under control?

I've owned 2175's before, and the bass is taut and a bit lean ... I've not heard any Roksan kit but it may well be a very different presentation.

Quite often when I insert a new bit of kit into my system, some fooling around with speaker position or cabling is needed to settle it in. And as you say, it can take a while to acclimatise to a new presentation.

[Darren]

Ah. I didn't know about the damping factor - that would certainly make sense as the bass is much fuller and wallowy.
I've moved the speakers more out into the room and being powered up overnight has also made a difference. I'm wondering if a less smooth interconnect might also help - have to have a root round.
Thanks for your remarks.