Has Anyone Tried the New Graham Slee Solo SRG - Only $435 (But Climbing)??? - Page 3

Well I most wholeheartedly agree with you on the repeal of the Glass-Steagall act which kept a lot of wall street shenanigans in check. But it's obvious you haven't done a thorough review of the origins of the federal reserve system. So we'll just get back to GS headphone amps before we start throwing chairs ....

this amp very detail, but I find a bit less punchy than RPX-33

what phones and source were you using with it ztsen? thanks

iphone line out, chord cable and D5k(mod)

Do you have the PSU1 or are you using the switching psu? How many hours of burn-in do you have in both amps?

FWIW you are comparing the Solo SRG w/ an amp that costs 2.5 to 3.25 times more depending on the psu selected for the Solo SRG.

For those interested in whether the Solo / SRG can drive low-impedance phones, here's the exchange I had with Graham on his forum. Graham really takes the time to explain his products and design concepts to his customers. And he reverts within a couple of hours...

Graham's replies may be a bit technical, but I'm sure some of you will find his technical descriptions useful.

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KDS:

"Thanks Graham for taking the time to explain my queries in such great detail. I really appreciate it. It's not always that a manufacturer takes such pains to explain his products to his customers."

GS:

"I've always tried to make myself available to the guys who put food on my table. I found I couldn't answer the phone anymore and still get my work done so I put this "community" online in a bid to address that."

KDS:

"I'm really enjoying the Solo SRG with my RS1 and MS-Pro. These phones really shine when driven by the SRG. However, there seems to be a perception that the Solos before the SRG were not ideal for driving low impedence phones like the Grados. If it's not too much to ask, was there a conscious effort to make the Solo more "Grado friendly" when you designed the SRG? I haven't heard the earlier versions of the Solo, but the SRG drives my RS1 so well that I can't imagine that the earlier Solos weren't ideal for low-impedence phones."

GS:

"The original Solo was designed when I had no money, using a pair of SR60's which are 32 Ohms. I invested some of what I made back into the development budget at which point I bought the high impedance Sennheiser HD's...

We have been making the original resistively coupled output Solo right up to the "2007". There were a number of changes in its development but it always had the same output resistor. Nearly all the "rave" reviews the Solo had were by reviewers using low impedance headphones like the Grado RS1. Phil Gold (ejtm) reviewed it using K701's...

The SRG was a development of the "green Solo experiment": the "green" used a 33 Ohm output resistor which, by the way, some famous headphone amps also do.

The SRG also uses a 33 Ohm resistor but it's inside a negative feedback loop (a second negative feedback loop in fact) which effectively reduces its impedance to 5 or 6 Ohms throughout the audio band and way beyond. I liked the idea so much I included the second negative feedback loop idea in the Novo I was also working on at the time - that just beat 4 similarly priced amps in a What Hi-Fi head to head - I think it works?

PS. the 33 Ohm resistor is to enable it to continue using the original "fast" small signal transistor output stage: the 2nd NFB makes it "almost direct", but a short circuit puts it immediately back to 33 Ohms, protecting the transistors."

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For me, the SRG works beautifully with my RS1 and MS-Pro My short impressions on the SRG can be found elsewhere in this forum.

You're nearly correct about distance selling.  You have to contact the seller within 7 days to state you're intent to return, you then actually have 28 days to get the item back to them.  The item must be as new & with all packaging.  The seller is obliged to refund ALL costs, inclusive of return postage, some places state they don't refund postage &/or add a 'restocking fee'. They are not allowed to do either, it's illegal, simple as that . . . a warning to report them to trading standards usually solves that problem.  Please pass this info on at every given opportunity because people are being ripped-off all over the place.

have u read the headfonia review? i feel that it points out very well the sonic aspects of the amp:)