The Stax thread (New) - Page 547

The 007t and 727 are more powerful then the SRM-1 but then 007 ups the ante so to speak by needing a lot more power then the Lambdas. That's the reason why we invest so much in after market amps.

I think the girth of this box is finally starting to settle in.

It's not far off in size from an SRD-7, is it?

Very similar though a bit longer and not as tall.

In my case, my SRM-1 Mk2 Pro gives the SR-Lambda and SR-5 more space and ambience and detail and transparency, at the expense of dynamics or slam, but bass seems just as good with both. I prefer the SRM-1 Mk2 Pro myself.

What phones are you running? The electret or the lambda?

The electret do not use the bias of either the SRD7 or the amp. I guess they could sound different on the transformer or the amp but I wouldn't think that using an amp to run an electret is a good way to assess the capabilities of the amp. I don't feel that any of the electrets are as good as comparable biased phones (i.e. true electrostatics) All of the electrets came with transformers so possibly they need the extra oomph a transformer set-up can provide in order to sound good.

If you are talking about the lambdas, you might want to look into a good grade power cord for the amp. Even a modest upgrade can make these older and lower powered amps sound better.

I prefer the SRM-1Mk2 Pro to my SRD-7SB adapter with both SR-Gammas, SR-Lambdas and SR-Sigmas. I think the sound is more detailed and even the bass is better with SRM-1Mk2Pro. I have several good amps that I tried with SRD-7SB and with all of them there is a certain distortion and coloration to the sound, although it adds to the oomph I feel it pollutes the overall sound. The only headphone that I liked better with SRD-7SB was SR-X MkIII.

It looks like we are both in agreement SRM-1 Mk2 Pro driving normal bias phones is better than normal bias transformer, which means maybe something is wrong with his SRM-1 Mk2 normal? I would think it should have 230v not 200v bias.

He measured at the socket so the reading should be off. By grounding the bias pin he completed a circuit which is supposed to be an open one so the bleed resistor drops the voltage.

I must be odd or something! I have a feeling the srm may have a fault i just can't rate the srm higher than my srd setup. I've listened to both for about 4hours using my lambdas and the srm's just seem more 'vague', less punchy and the detail in Jack Johnson's guitar work just doesn't seem as accurate.

Trust me I would be very happy if i could get rid of the srd and the amp and stick with the srm but i prefer sound over ergonomics. I haven't cleaned the rca contacts and haven't looked inside the amp yet but i may take it apart later this week and give it a good clean i'll also try a different set of interconnects and clean the headphone sockets to see if it makes a difference. One thing i have notices is that it gets quite toasts is this normal?

Certainly the SRM1 Mk2 Pro runs hot - it is a Class A amp. I presume the the SRM 1 Mk 2 non-pro would also run hot.

Oublie...hang on to that srd7 mk2 +NAD combo if it is sounding good. They just may have that synergy that many srd7 pro and mk2 owners are looking for.
The only normal bias stax i have is the SR Sigma and it sounded best not from the srm1mk2 pro but from the srd7 mk2 currently combined with a Teac reference A H500 integrated. the srd's commonly add deeper bass and dynamics with the "loss" of upper mid and treble detail( the previous carver no exception)...so I have been going thru a few amps to find one that "added" this upper range and forwardness to my liking, and specifically for the Sigma. The srm1 runs the Lambda pro/303 very good...when I want that sound. Each one brought with it the above characteristics...until I tried out the Teac. The best that I have heard out of the Sigma...the bass is dynamic, excellent Sigma soundstage and a clearing up of the upper midrange. Still not as forward and trebly as I would want but much more enjoyable. And a big plus was that the SR 007 sounded very good also...not to the 717 level but...maybe 75-80% there...real difficult to quantify, but definitely better than the 007+srm1mk2pro combo, which I happen to think sounds very decent.
Now I do not have a non pro srm1mk2 and never heard one...so your unit could be off some...but do not get rid of your srd 7mk2...unless of course you let me know first cause I could always use another...these are getting difficult to get. One agon lasted minutes I think!
Dang now I may have to hunt down a NAD...what was that model number?

My SRD-6SB sounds delightful through my NAD 320BEE, but I've not yet had the chance for an extended comparison with a dedicated Stax amp. Hopefully Larry and I can get together soon to do just that.

I narrowly missed a 006t ad on here just yesterday, so I was hopeful...

Glad I'm not alone.

The NAD may colour the sound i'm hearing but in a good way. I run it using a zero dac as both the dac and preamp connected to the 3020b power amp section directly. I bypass both the preamp and the onboard high and low filters on the amp so in audio terms there is no obvious high or low end roll off. The Detail is still there in the mids possibly because there is no filtering. I tested the nad preamp against the zero's pre using Rightmark audio analyiser and the Zero's won the numbers game so I think its a pretty decent setup considering the low cost. Based on what i've read and experienced with the pro lambda's and the newer stax amps I dont think i'll be trying anything new until I'm buying a set of o2's which may be sooner than i though it would be.

Here are a few links about the NAD if anyone is interested.

NAD 3120 Upgrade by Fidele Audio [English]
diyAudio Forums - NAD 3020 amp upgrades? - Page 1

My maxed Woo GES with pro and normal boas jacks will ship to me tomorrow, after the 12BZ7 tubes arrive today (although I already have a quad of 12BZ7 tubes and offered to accept the amp without the tubes if I can get a credit for them).

So, sounds like we'll be able to compare Woo GES Prototype and Maxed, SRM-1 Mk2 Pro, your SRM-T1s if you bought it, and SRD-7SB and SRD-7 Pro with Nuforce or Travagans speaker amp. I will only have the GES prototype for a couple of days after the new one arrives next week, so if you want to compare with both of them be ready for late next week?

Absolutely, I'll plan on it.

I did pick up the SRM-T1, and it should be here by late this week or early next.

I'll bring my SRD-6SB down for kicks, too. There will be at least three pair of normal bias phones there, so we might have a chance to compare it to the SRD-7