[_Spanky_]

ajuztam, could you provide more details on your experiences with the OPA627 and AD8599? Are you using the OPA627 for the DAC and the AD8599 for the amp? How's the DC offset of the AD8599? What are the improvements you hear in the Tung-Sol 2C51? Any information you provide, I'll put in my condensed FAQ and Info thread. Thanks.

 

[muad]

ajutzam, I have to agree with you on the opa627. After switching back and forth between that and the LT1364 I've made up my mind that the OPA627 is my permanent opamp for the tube preamp, at least until I try the bursons. Along with the info spanky asked for, please keep us in the loop on the capacitor change.

 

[_Spanky_]

Quote:

Originally Posted by muad /img/forum/go_quote.gif I've made up my mind that the OPA627 is my permanent opamp for the tube preamp

You guys mean the DAC socket? What makes it better than the LT1364 or LF353N?

 

[MartinV56]

Notes on audio Opamps, very intersting


Notes on Audio Op-Amps

 

[muad]

Spanky, Yes, its for the dac socket. The opa627 is very clean sounding, laid back but not too dark or anything. The base is perfect! The mids are clean very nicely defined. The treble flows very nicely but its a little recessed which seems to hide recording imperfections nicely. The laid back character of this opamp really smooths out grainy/bad recordings. Its a great opamp to day dream to! (cheesy I know but thats what it sounds like)

For the faq you could just describe it as clean and laidback

 

[_Spanky_]

Thanks muad. I'm overhauling the thread so this will be a nice addition

 

[muad]

Np

Just wondering has anyone one here tried/thought of putting a remote ir pot for the volume control? Is this possible or should I just give up now?

 

[_Spanky_]

muad... Anything is possible

I think I've done a halfway decent job on the FAQ and Info thread so, I'd like some feedback on it. If you're reading this thread...

[size=x-large]PLEASE check out:[/size]
http://www.head-fi.org/forums/f5/mav...thread-470639/

 

[radicalrev]

Don't think I can read all of the 80 page posts...

But to sum it up, can anyone with the D1 share their opinion with the headphone amp section? How is the sound quality compared to other SS hp amp (particularly Little Dot MKV)?

 

[_Spanky_]

radicalrev, you can search the thread. I know the Little Dot has been talked about. There are also a few reviews in my http://www.head-fi.org/forums/f5/mav...thread-470639/

 

[xcluded]

which model of opa627 is it correct ?
i search the farnell website and got these...

OPA627AP (Texas instrument)
OPA627APG4 (Texas instrument)
OPA627BP (Texas instrument)

 

[muad]

Im using the opa627au. They're single channel opamps so you need two and an adapter. I just grabbed the pre-mounted ones from browndog so I wouldn't have to do any soldering. You can also get it for cheaper from here. There are 2 different models on that site. The one with separate adapter and opamps costs more and may not easily fit in the maverick. The $37 dollar one is the one that works.

 

[_Spanky_]

OPA627AU is the SOIC (surface mounted) and the OPA627BP is the DIP socketed one. It doesn't really matter which you get but you need to get the single to dual opamp adapter that fits.

This:
http://cimarrontechnology.com/Produc...0302topbot.jpg
Is for SOIC opamps.

This:
http://cimarrontechnology.com/Produc...ers/021001.JPG
Is for DIP opamps.

They all do the same thing

 

[xcluded]

Quote:

Originally Posted by muad /img/forum/go_quote.gif Im using the opa627au. They're single channel opamps so you need two and an adapter. I just grabbed the pre-mounted ones from browndog so I wouldn't have to do any soldering. You can also get it for cheaper from here. There are 2 different models on that site. The one with separate adapter and opamps costs more and may not easily fit in the maverick. The $37 dollar one is the one that works.

ok thanks muad and spanky

 

[sfrancis]

I'm curious as to how people use d1:

1. headphone amp -- connect headphone directly to D1. This is what I'm doing now.
2. DAC -- use D1 as DAC to feed into another amp;
3. pre-amp: I guess to connect pre-amp output of D1 to another amplified and then to speaker ? -- I plan to try this sometime, i.e., connect the pre-amp output to my Pioneer Receiver and then to a bookshelf speaker to compare.

Thanks