Dual AD1865 balanced out DAC

boudy · 20th January 2011, 09:13 PM

I'm digging raindrop_hui's single AD1865N-K DAC board (modified of course) and recently found this offering on the bay:

DAC AD1865, AD1865 NOS 2.0 Balanced output - eBay (item 320643827034 end time Jan-26-11 09:05:22 PST)

Since I'm running a diff input amp it seems like a natural.

Has anyone given it a whirl yet?

xyphen · 26th January 2011, 01:52 AM

Anyone out there try this yet? I'm interested too.
I've been looking at this thing for a while. I'm planning to use a pair of transformers for the output stage.
The biggest problem I've had is finding a power transformer with the right windings. The seller does carry one but it'd be an extra $50 to $60 with shipping.

xyphen · 2nd February 2011, 02:17 AM

Ok, looking at the datasheet for the AD1865 and it has both I and V out. I'll have to ask the seller which output this board uses. If it's using the V outs, then I'm going to pass.

abraxalito · 2nd February 2011, 02:26 AM

It he was using the current outs then I bet he'd mention which opamp was doing I/V. He doesn't, so I think its V outputs.

xyphen · 2nd February 2011, 09:56 PM

He lists it as not including an analog stage.

I messaged him and he said it used I out.

I'm looking at using this as a dac for headphone amps so I can probably get away with a passive i/v with transformer setup. I won't need the voltage gain that you get with other topologies.

Art · 3rd February 2011, 03:30 PM

Hi,
I built like this, few years ago. 2x AD1865N-K as differential DAC, CS8412 DIR, LM4562 IV, with synchronous reclocking. I also built balance ECC82 preamp and 12AY7-E182CC-TZ40 PP amp, to match set with DAC. Sound really realistic and background very quiet.

I'm happy to share any information, if you're interesting.
Regards,
Art.

20th January 2011, 09:13 PM	#1
boudy diyAudio Member Join Date: Sep 2006	Dual AD1865 balanced out DAC I'm digging raindrop_hui's single AD1865N-K DAC board (modified of course) and recently found this offering on the bay: DAC AD1865, AD1865 NOS 2.0 Balanced output - eBay (item 320643827034 end time Jan-26-11 09:05:22 PST) Since I'm running a diff input amp it seems like a natural. Has anyone given it a whirl yet?

2nd February 2011, 02:26 AM	#4
abraxalito diyAudio Member Join Date: Sep 2007 Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though... Blog Entries: 46	It he was using the current outs then I bet he'd mention which opamp was doing I/V. He doesn't, so I think its V outputs. __________________ I think ideas are what you want to get rid of. I don't really like songs with ideas. - Leonard Cohen

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26th January 2011, 01:52 AM	#2
xyphen diyAudio Member Join Date: Jun 2009 Location: Ramstein, Germany	Anyone out there try this yet? I'm interested too. I've been looking at this thing for a while. I'm planning to use a pair of transformers for the output stage. The biggest problem I've had is finding a power transformer with the right windings. The seller does carry one but it'd be an extra $50 to $60 with shipping.

2nd February 2011, 02:17 AM	#3
xyphen diyAudio Member Join Date: Jun 2009 Location: Ramstein, Germany	Ok, looking at the datasheet for the AD1865 and it has both I and V out. I'll have to ask the seller which output this board uses. If it's using the V outs, then I'm going to pass.

2nd February 2011, 09:56 PM	#5
xyphen diyAudio Member Join Date: Jun 2009 Location: Ramstein, Germany	He lists it as not including an analog stage. I messaged him and he said it used I out. I'm looking at using this as a dac for headphone amps so I can probably get away with a passive i/v with transformer setup. I won't need the voltage gain that you get with other topologies.

3rd February 2011, 03:30 PM	#6
Art diyAudio Member Join Date: Oct 2002 Location: Thailand	Hi, I built like this, few years ago. 2x AD1865N-K as differential DAC, CS8412 DIR, LM4562 IV, with synchronous reclocking. I also built balance ECC82 preamp and 12AY7-E182CC-TZ40 PP amp, to match set with DAC. Sound really realistic and background very quiet. I'm happy to share any information, if you're interesting. Regards, Art.

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