[Skylab]

Yeah, I know the Woo site says 25-600 ohms. But without knowing the output impedance of the WA2, it's hard to know how "real" those numbers are. Like I said, just because it's not electrically ideal does not mean the results would be bad. However, I wouldn't go purchasing a pair of Denons specifically to use with the WA2, either.

 

[hodgjy]

Apparently, matched pairs now run $90 from these guys.  Supply and demand.  Once word got out, supply down, price up.
 
I really love this tube, and at that price, it's still a decent deal.  If they get any higher, I might have to rethink things, but for now, I can live with that going rate.
Quote:

At last check, www.vacuumtubes.net had 5998's for $40 each.

 

[Thaddy]

Man I purchased mine at the best possible time.  $46 for my matched pair

 

 

[hodgjy]

From Alex?
 
Quote:

Man I purchased mine at the best possible time.  $46 for my matched pair

 

[Thaddy]

Yup!

 

[Thaddy]

Have any WA2 owners had the chance to listen to the HE-5LE's?  Any problems or issues with the OTL amp driving the 62 Ohm HE-5LE's?

 

[Frank I]

Quote:

Yeah, I know the Woo site says 25-600 ohms. But without knowing the output impedance of the WA2, it's hard to know how "real" those numbers are. Like I said, just because it's not electrically ideal does not mean the results would be bad. However, I wouldn't go purchasing a pair of Denons specifically to use with the WA2, either.

Rob I believe the Denon are much better with the solid state amps than with the OTL. At least that is my experience with the CSP-2. The D7000 sound ok but it never reaches its full potentia, It also sounds better with the 6922 and not so great with the 6DJ8. But on SS amp the Denon has power and bass and totally unrestricted sound stage. Probably the Woo 6 would be much better for the Denon

 

[hodgjy]

Perhaps fire an email off to Jack Wu.  He seems to know what cans sound good on the Woos.  When I ordered my amp, he wanted to know specifically what cans I had in mind to make sure I was making the right choice.
 
Quote:

Have any WA2 owners had the chance to listen to the HE-5LE's?  Any problems or issues with the OTL amp driving the 62 Ohm HE-5LE's?

 

[Thaddy]

One step ahead of you

  I've also been scouring meet impression threads as well, but haven't been able to find a solid answer.
 
edit:  Heard back from Jack.  Since the HE-5LE's are low efficiency headphones they will require a higher output from the amp, and he recommended I use the 7236 power tubes.  He didn't think the impedance would be an issue.

 

[Skylab]

I tried the HE-5LE after Thaddy asked - worked actually quite well, I thought, much better than I expected.  I actually like the HE-5LE quite a bit with the WA2.

 

[diego]

The WA 2 should have an output impedance of around 75 ohms with 6as7 tubes, 40 with 7236s and 32 with 5998s.
 
I have an amp with the same output stage and I have tried it with my 60 ohm 701s and my 600 ohm 880s. I have also tried both headphones with my B22 as reference. In the case of the 701s the bass is not as deep or defined with the tube amp while there is little difference with the dt880s.
 
I'm pretty sure the WA2 won't be competitive with a SS amp at low frecuencies driving the Denons. However, it's not that bad and you may still like it.

 

[Thaddy]

I just picked up a pair of RCA Blackplate 6AS7G's and Tung Sol 7236's.  If anyone is looking for Tung Sol 7236's, you better act quickly because they're getting extremely hard to find.  I might have picked up the last matched pair from Tube World.  I'd say that about round out my tube purchases for a while, time to start listening

 

[herroyuihk]

Quote:

I just picked up a pair of RCA Blackplate 6AS7G's and Tung Sol 7236's.  If anyone is looking for Tung Sol 7236's, you better act quickly because they're getting extremely hard to find.  I might have picked up the last matched pair from Tube World.  I'd say that about round out my tube purchases for a while, time to start listening

Maybe....I should start to buy WE421 for my WA2 now
Although they are extreme expensive, I have no choice.......

 

 

[HeadphoneAddict]

Quote:

I tried the HE-5LE after Thaddy asked - worked actually quite well, I thought, much better than I expected.  I actually like the HE-5LE quite a bit with the WA2.

I actually like the HE-5 LE a lot with my WA6, and they seem a little easier to drive via the WA6 than the original HE-5 as well.  It could use a little more power, but it's very acceptable.

 

[hodgjy]

I'm not sure if you're kidding or not, but if you're not, the WE 421A is just a rebadged Tung-Sol 5998.  Exact same tube except for the painted logo on it.
 
Quote:

Quote:

Maybe....I should start to buy WE421 for my WA2 now
Although they are extreme expensive, I have no choice.......