Hi,   I want to try using my mk iv as a pre-amp. I would be using it with this integrated amp doing power amp functions: http://www.soundstage.com/revequip/shearne_phase2.htm   Unfortunately there is not much info available about this amp, so I can't find out if it is DC coupled. Any...

Quote: Thanks for your suggestion. I'll get some of them. Any signal tube recommendations that would have softer treble than the rca black plates I am currently using? Thanks.

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Quote: I have what I think are the stock tubes that came with the amp (bought this second hand), and a pair of rca black plate 5654s that came with it. I cant hear much difference between these two when it comes to the ultra-highs. Keep changing my mind on which is harsher.

Hi guys,   I have a mk iv driving HD600s. I love the sound of the HD600s on all frequencies apart from the very top end. I find the ultra-highs to be a bit intrusive and harsh, making hi-hats and certain cymbal blasts too piercing and prominent. Any tube recommendations to take the edge off...

So I was just reading this thread because I have always wondered about the cable debate. You guys seem to be talking about capacitance and inductance, and whether that has any effect. I'm not sure about that, but it seems to be that impedance would effect frequency response anyway. I studied...

Hi there,   Just wanted to ask. Is the Little Dot IV (not se version) a good match for HD600? Would it also be good for Grados? (I have a custom woodied pair).   I am thinking about buying a second hand one for £150. Is that a good deal? And is there much of a difference between the...

Thanks for the great replies!    cucera: yer, I guess the wooden cups reduced the highs a bit. I didn't think it was that big of a difference though. And yes I think you are right. I think the reduced bass and the much less intense transients in the upper mids make the really high...

Hi,   So I just picked up a pair of HD600s yesterday used: thought it was time to hear what the fuss was all about. What confused me though is how bright they sound - there is loads of upper treble making cymbals louder and more piercing than I am used to. I am coming from a long time...

Huge definitely isn't the word. I upgraded to a pair of 225s from my 80s and quickly sold the 225s. The differences were audible but hardly of a higher class. I couldn't decide which sound signature I preferred - they were just different to my ears. For the difference in money I really wouldn't...

Just wondering how different people wear their Grados. Do you wear them tight or loose on your head? Do you wear them ON your ears, pushed forward so the whole pad is on the ear, or do you wear them around the ears so your ear is enclosed in the bowl (for bowl pad users that is).   It seems...

So, you often hear about manufacturer's "doping" the drivers with some compound solutions to alter sound signature and increase performance. I'm curious about the science behind this. Any ideas how this works?   I am fairly skeptical that painting a compound onto a driver can really improve...

I just put my drivers in wood cups, so I don't need the extra bass boost now. The problem is, since the holes are normally covered by some fairly thin felt, simply re-covering them with tape or something like that won't do because that will block ALL the airflow. Need to reduce it but not block...

Hey guys,   Any tips on how to go about reversing the driver venting holes mod? I vented two, and I want to undo it...

Hi,   Does anyone know how many holes are vented on the driver in the RS1. I heard different things, from none, to four. Does it depend on when if was made? If someone who has an RS1 could shed some light on this it would be great. Thanks   Andrew

I too have heard lots of difference between different models in the prestige line-up...I also had a pair of 225s that sounded nearly identical to my 80s (actually I slightly preferred the 80s). I think the large difference that can be heard between different models (as well as the down-right...

Also, just to say, dunno if there are any Grateful Dead fans here, but MAN do my modded Grados sound incredible with some live 70s Dead...total eargasm.

Quote: I didn't expect it myself, but the results really are amazing! I am finally starting to think that the drivers really are the same in all Grados and the lower models are just the victim of deliberate crippling. Guess Grado are a victim of the brilliant simplicity of their own...

Just wanted to say, finally bit the bullet and removed the plastic grills from the back of sr80s today.....WOW. Unless I have completely forgotten what they sounded like with the grills in place, i swear they sound MUCH better now! Dunno why I never did this before.   Any suggestions for a...

Quote: Just want to point out that this is not true. There is no risk at all in using a DMM to measure the impedance of a driver (or any other delicate component for that matter). A DMM is pretty close to an ideal "infinite resistance" and so the current that flows (whether DC or AC) is...

After venting 2 holes I seem to be noticing some boominess on certain bass frequencies. Sounds like the cup is resonating. Have you guys noticed this? I can't compare to how they used to sound, but I never noticed a trace of boominess before with my grados...

Hi,   Just thought I'd throw this out there....   In my experience by FAR the biggest changes (improvements) to the sound of my grado sr80s comes from playing with the headband/pads. It's really amazing how much their sound signature changes between a tight pinched headband, a really...

Has anyone tried experimenting with different amounts of dynamat/damping on the driver?   I recently went from a blob of bluetack a similar size to the ones grado use, to a much larger amount covering the whole driver (excluding the holes). If anything I think it sounded better with the more...

Do you know how many holes are vented on the RS1?   It makes sense to vent four holes on the GS1000, since it uses the jumbo pads and probably needs a bass boost to compensate. Has anyone compared a vented Sr60/80 to an RS1? If so, with the vent mod is the bass quantity/quality comparable to...

  Hi,   I was wondering if anyone knew how many holes are "vented" (not covered in the felt material) around the driver in the various higher-end Grado models.    I recently opened two holes on my SR-80, and I like the change, and I'm curious to do more, but I really don't want to...