Headsave classic old & new

[ropeadope]

Hellos, can someone tell me the difference between the v1 headsave classic and the newer one?

Also should a 24v Elpac be enough power (or a good amount i should say) for a v1 headsave classic with dual OPA 637s and a 627 for ground? Thanks for reading. I searched around but couldn't come across these answers.

 

[Azure]

24v Elpac definetly should be enough as it seems to be used/included with many amps here. As for the differences, I don't know (I'm actually wondering what the differences are, too).

 

[Oink1]

Asthetics aside - i'm not sure of the differences... The last one looks like this though

 

[Helter Skelter]

I also have one of the "new" models. I have the 24v Elpac myself, and the amp is using AD8620/10 opamps. I as well would be interested if anyone can shed some light on the internal design differences. Regardless, it's a great little amp.

Mine looks like this (you can see that I opted for the blue LED, because everyone knows that blue LEDs make for better sound):

I'm rather fond of that pair.

 

[Oink1]

Quote:

Originally Posted by Helter Skelter Mine looks like this (you can see that I opted for the blue LED, because everyone knows that blue LEDs make for better sound)

Meh! - Everyone knows the 8620/10 combo with the green LED and silver knob has a better low end response and sparkling highs!

 

[sbulack]

One of the differences between the original Classic and the new Classic is that the original Classic was a 2 channel amp (left and right channels). The new Classic is a 3 channel amp (left, right and ground channels). I find that adding the ground channel increases the blackness of the amp's background and substantially increases its effective dynamic range as well as the size and coherence of its soundstage.

A 24v elpac will supply plenty of power to a PPA with 637's in the L/R channels and a 627 in the ground, so it should be no problem for the new Classic with the same opamps. A 24v elpac powered my new Classic with three 627's with no problem. I then switched to a self-built AA power pak with 16 NiMH AA's in series for cleaner, quieter power.

Does your new Classic have a sufficiently high gain to permit the use of 637's in it? The 637's are only minimally stable at a gain of 5, and the higher the gain, the more stable they are. I've read DIY folks recommend a gain of 7 in order to use 637's stably.

I find three 627's to give a very fine Burr Brown sound to the amp. I find the new Classic, with AD8620/10 opamps, to sound significantly better than the original two channel amp with an AD8620. I also find that the new Classic with AD8620/10 opamps is positively synergistic with canalphones.

 

[ropeadope]

I don't actually have one myself, was just kinda looking at one and was curious to know more about it, now i do

- Unfortunately i don't have enough cash. I don't think i'd get one anyway though, OPA 637s sound too confusing to maintain

- I think i'll end up getting an amp with AD8620s down the road (not too far down the road hopefully). Thanks for the help.

 

[dj_mocok]

What's so confusing ? You just need to plug the amp and enjoy the music. I think you'd better match the op-amps accordingly to your headphones' characteristics though.

 

[ropeadope]

Quote:

Originally Posted by dj_mocok I think you'd better match the op-amps accordingly to your headphones' characteristics though.

How would i go about doing that? I got the HD-555s, i think they're 120 ohm.

 

[adhoc]

this is a pic of my (now sold) 'early-edition' classic.

 

[ropeadope]

Well...i'm not concerned about the appearance of the different versions. Just curious about the insides