[miow]

Hey Raines. Long time no talk. How are you mate? Seems that we have the same amp, uh? Fabulous, simply fabulous.

 

[gelocks]

I wonder if John would ever get to do full size amps and Dacs... I for one would definitely get them!!!!

 

[ClieOS]

I wonder if John would ever get to do full size amps and Dacs... I for one would definitely get them!!!!

It's called O2 with ODAC.

 

[gelocks]

Quote:

It's called O2 with ODAC.

 
LOL!
Not his design though... and input for the ODAC is limited to just USB... I meant FULL featured amps/dacs...

 

[wje]

Quote:

I wonder if John would ever get to do full size amps and Dacs... I for one would definitely get them!!!!

 
The talk of a larger O2 or (desktop sized) amp has been going around for quite a bit of time.  When we'll see NWAudioGuy produce these is anyone's guess.  However, since the ODAC has been launched, I'm assuming that time and focus now might be able to be applied to that other amp size.

 

[Raines]

Quote:

Hey Raines. Long time no talk. How are you mate? Seems that we have the same amp, uh? Fabulous, simply fabulous.

 
 
hey my friend
 
here we go again in audio journey
 
 
 
C-421 2227?  wonderful!!! much better than the cmoyBB
 
 
 
not waiting for denon 5000

 

[SteveSatch]

I now have two C421 8620s.  If anyone has a C421 2227 and wants to trade for one of my 8620s let me know.  I'd like to be able to compare the differences.
Thanks,
Steve

 

[LoveKnight]

Has anone tried the laser machine of JDSLABS Engraver yet? I think it is really beautiful and awesome. Oh by the way, JDSLABS said that it is free, just order when you buy new ones from JDSLABS. I am thinking what logo or picture on my  C421 in the near future.

 

[Raines]

i only saw it after getting them...
 

 

[miow]

I loved it.
 

 

[tzjin]

All the more tempting now.
 
Question to owners. Does the supposedly high output impedance affect your use with 32ohm headphones?

 

[alphaphoenix]

If yo mean in a bad way - nope.  The sound is clean, impactful, and the dynamics full when listening with my Grado or Yuin PK1. It's an impressive amp.  I tried the OP2227 and was impessive, but like others, I prefer the AD8620. Either one will provide the current for 32ohm headphones.

 

[tzjin]

I think in Tyll's review, the C421 measured at almost 10 ohms output impedance, so I was worried about the 1/8th rule. Thanks for the quick reply!

 

[Mutnat]

Quote:

I think in Tyll's review, the C421 measured at almost 10 ohms output impedance, so I was worried about the 1/8th rule. Thanks for the quick reply!

 
Yeah I believe John replied that the output impedance is a result of extra ferrites (IIRC) that were added just before the output to help minimize/prevent electrical interference (cell phones, etc).  I've yet to run into any issue, though my cans are 70ohm so not as far off the rule you mentioned.  John also mentioned that you could request him not to add the ferrites on a custom build if you were concerned about the output impedance.

 

[miow]

Quote:

If yo mean in a bad way - nope.  The sound is clean, impactful, and the dynamics full when listening with my Grado or Yuin PK1. It's an impressive amp.  I tried the OP2227 and was impessive, but like others, I prefer the AD8620. Either one will provide the current for 32ohm headphones.

Hi alphaphoenix,
 
What do you prefer exactly on the AD8620?