LDR Active Preamp - does it exist?

This would be better, only use the first half it has 4 x gain, change the NE5534 for a better OPA627. It has 100k input impedance and 100ohm output impedance, put it after the Lightspeed. (Forget about the back stage with the NE5532) This would be far better than the ZStage.

http://www.ebay.com/itm/HI-FI-STEREO-NE5534-NE5532-CLASS-AA-OUTPUT-STAGE-LINE-LEVEL-PREAMPLIFIER-/261127345717?pt=US_Home_Audio_Amplifiers_Preamps&hash=item3ccc671635

Cheers George

And there's this one also,even better, already has a OPA627 and gain can be changed 7 or 2 And it has a discrete match fet output stage, I would omit R1 as the output of the Lightspeed will take it's place.

http://www.ebay.com/itm/OPA627-K170-J74-2SK170-2SJ74-Audio-preamp-DIY-KIT-/320840215695?pt=US_Amplifier_Parts_Components&hash=item4ab3912c8f

Cheers George

Burson Buffer is $550, not $700.

http://www.partsconnexion.com/t/Index/bur_buf160.html

I have not much to say about the Decware. At the risk of being impolite, when people talk about buffers, Burson usually comes up first. I'd go with the more well known manufacturer in this case.

+1 for Burson with LDA. A great match, been happy with this combo. Also, the people at Burson are friendly and accommodating.

George - the OPA627 DIY is too hard for me. Is there another version that easier.... :))