which one of these peamps is more compatible and efficeient with a Class D TDA7492 2X board in BTL mode using 40hm ADS L710 Or Nova 8B's here is
1. 6J1 6P1 High End headphone preamplifier HIFI-in Consumer Electronics on Aliexpress.com
and 2. 6N3 + 6Z4 tube valve preamp preamplifier amplifier CLASS A include transformer 110V/220V-in Consumer Electronics on Aliexpress.com
oh and the amps there are 2 comming Free Shipping TDA7492 high powe Digital Amplifier Board 50W * 2/100W can Parallel Bridge drop-in Consumer Electronics on Aliexpress.com
I chose those preamps because the power supply is already set up,being the noob that I am..thanks,Cleon
1. 6J1 6P1 High End headphone preamplifier HIFI-in Consumer Electronics on Aliexpress.com
and 2. 6N3 + 6Z4 tube valve preamp preamplifier amplifier CLASS A include transformer 110V/220V-in Consumer Electronics on Aliexpress.com
oh and the amps there are 2 comming Free Shipping TDA7492 high powe Digital Amplifier Board 50W * 2/100W can Parallel Bridge drop-in Consumer Electronics on Aliexpress.com
I chose those preamps because the power supply is already set up,being the noob that I am..thanks,Cleon
oh come on now it is not just a headphone amp, I will handle this myself I am so tired of being snubed here at Diy,I take it personaly when I repeatedly ask for advice or help And I get nothing.All I wanted was to evaluate these preamps and wanted advice on wich one was a better choice.that ok I will just pick one and go from there.I will try and find a more open and reponsive discussin board.
Thanks anyway,Cleon
Yea it's ok ,I will just look at the threads that get anwered that I close to my needs.I know people are doing their own thing but no one can halp someone.OK.I will get more response to this than the original post.
My question was from serious interest, not to offend you. 
If its just for the tube sound, i simple 1-tube-buffer would be enough.
I first were like:
That gives:
I then ended up here:
That gave:
ECC88 + MAX9704 Class-D (2x10) with 12VDC in for the Amp, Step-Up to 90V for the tube an 6.3V Step-Down for the heater.
Ideas came from:
Thats why im asking.
If its just for the tube sound, i simple 1-tube-buffer would be enough.
I first were like:
That gives:
I then ended up here:
That gave:
ECC88 + MAX9704 Class-D (2x10) with 12VDC in for the Amp, Step-Up to 90V for the tube an 6.3V Step-Down for the heater.
Ideas came from:
Thats why im asking.
Attachments
I am more or less looking to get a good tube preamp to evaluate,with some of the boards that are offered up from China,I am familar with tubes as My guitar amps are mostly tube ,A old vibralux and a couple peavey's.never have used tubes on stereo system.No sir I am not offended but at closer inspection you see both preamps are also for a amplifier too.I have decided to go with the 6n3 And was told to switch out the tubes for the russian 6n3 for improved SQ.I am gonna take some time and look at the material you have added to the post.and I thank You for Your Time and Efort.
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