Oh, yeah, forgot, x2 on what TheAudioDude posted. Listen to the GS-1 for about a month then go back to the just the Benchmark. Also, aside from personal preferences, even our ears have different response graphs on top of headphones having that, ergo, YMMV.
Quote:
Originally Posted by
poo 
In terms of my listening, it's pretty diverse. I've tried to compare a large range of genres and recordings during this comparison. Everything from Kronos Quartet, Pink Floyd (MFSL Remasters), Cult of Luna, Bjork, Isis, Pelican, Various Classical releases, Beck (MFSL remaster), Toe, Olafur Arnalds, Helmet, Bonobo, The Brian Jonestown Massacre, Portishead, Primus, Les Claypool, Mogwai... I could go on...
All of this is largely irrelevant to be honest, I just want to understand what sort of things people hear in terms of quality improvements when upgrading an amp, so that I can listen for those things and see if I agree.
So back to my original question... What difference should I be hearing?
Just checking, I've heard a lot of people being curious about the K701/702, HD580/600/800, T1, etc, but they're listening mostly to simpler recordings that Grados can do well enough while being less picky about amplification. (pop rock, smooth jazz, that sort.) If you're up to spending more money though, an SACD player and a few SACDs might make a lot of difference through the GS-1 and Benchmark.
On what you should be hearing, I'd tell you about my headphones. The HD600 actually despite Grados having that energetic presentation still gets more out of using my Little Dot MkII. The HD600 doesn't care much if it's fed directly by my Marantz CD60's headphone out or the tube amp, but, it still gets an audible improvement with the percussion and a tiny amount of tube warmth for guitars. Take note though, the MkII by my ears is very tube-y sounding, at least not the typical tube sound that I mostly hear from EL34 PP amps. By contrast my AKG K66 is is so analytical and transparent (it is a studio monitor after all) the overall sound changes drastically between SS and tube, although being entry-level, it doesn't mean it gets more detail out than the other two with a good source. Which means the HD800 does not need that much more current than what the Benchmark is giving it, and impedance is very nearly a match (assuming it is with the GS-1 also.)
The low impedance of the Grados probably acts against its own dynamic capabilities (which explains why it benefits from a dedicated amp more than the HD600), theoretically. Amps being amps, ie, have more current out of a dedicated power supply vs the simpler piggy-back HP-out on the Benchmark, play Pink Floyd again and listen for dynamics. Does the percussion really sound the same? Or if the volume level is the same, perhaps the GS-1 is helping hte soundstage depth, so try to locate how far back these are in the soundstage. From my experience what sounds like "weak" mids isn't always the case; with both speakers and headphones sometimes the stage is just considerably deeper, and what people perceive as "eye-poppingly strong mids that grab your attention" - as with mid-level Focals or the typical Grado sound - usually don't have much for stage depth, even if the stereo and instrument separation is good.
And since you're open to rock and classical, you might want to try Epica's "The Classical Conspiracy." I was in a meet a few months ago and the K701 stepped all over my SR225 when used with my DAC-AH and LD MkII. Straight out of the laptop though, I didn't like either, but the Grado at least didn't sound as weak.
Edited by ProtegeManiac - 8/22/10 at 8:40pm