Pass Labs:What to expect fm XA60.5 to XA100.5


Hi Guys,

Some of you may know that I have some buzz/hum issue in one of newly received XA60.5 mono blocks. The dealer diagnosed the problem and determined the transformer needs replacing. Since the XA60.5 is only few days old so I am given the chance to get a replacement set or I could top up the price difference to get the X350.5 or XA100.5s when my dealer gets their stocks in the next 3-4 weeks time.

Kudos to Pass Labs and the dealer's service for all the patience and after sales services...certainly very much appreciated and glad I go for Pass Labs.

As such, I have 3-4 weeks to listen to the current XA60.5 in my system while waiting for the stocks to arrive and make the final decision on the swap/upgrade.
elmerpoh
This is a little off topic, but I too am currently listening to a Class D integrated, a Jeff Rowland Concerto. It runs very cool and sounds very good to my ears. However I'm waiting on the arrival of my Maggie 1.7's and while the Rowland will certainly supply the muscle needed to drive the Maggie's, I've read how wonderful the Pass XA amps sound with them.

My room & listening preferences match yours. I'm wondering if your Pass XA 60.5's throw off a large amount of heat in your relatively small room? I live in Texas with VERY hot summers, but have a room with good air conditioning.

Good luck on you ultimate decision. From everything I've read about the Pass amps, I think a pair of XA 100.5's would be the way to go.
Hi Kenl,

Yes,The reviews are pretty much true, the Pass Labs XA indeed have magical mids and highs.. You need to hear them...

Regarding heat from the XAs, no issue since you have air conditioning in your listening room.

When I listen to few hours of music with the XA60.5 without air conditioning, they only run slightly hot to touch(I.e. could still touch the heat fins for about 8-10 secs).

Cheers
With your speakers I would not expect much of a difference going from the XA-60.5 to the 100.5, it just doesn't seem like power (a fairly marginal difference here) is the issue, not with your speakers and your room. Did you ask Pass Labs?
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Though I did not say it before, I should have added that IMHO the XA60.5 will sound as good, if not better than the XA100.5 IF it provides enough power to drive your speakers to the volume levels you want, and in the case of your speakers, that would seem to be the case. All things being equal, my opinion is that the same basic circuit design sounds better in a lower watt configuration than higher watt because it is a simpler device at lower watts. My general rule is buy as many watts as you need, but no more than you need.