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Rupert Neve RNHP Headphone Amp Review

Xulonn

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#22
I'm guessing this implies when using 2-12V DC batteries or 4-6V DC batteries configured for 12 V DC output. I've never seen a 24V DC battery but they may exist and just be very uncommon.
Here's a 24v Li-ion battery...

I purchased a Talentcell PB249B1 (42980mAh) powerbank on Amazon, and picked it up at the package forwarder yesterday. It has three different voltage outputs - USB 5v/2.4A, plus 12v/2.5A and 24v/5A.

It's charged fully, and I am about to try it with my 24vdc Aiyima ChiFi amplifier. Source will be my Cayin N3 DAP, and speakers a pair of Yamaha NS-A325 mini-monitors or larger Q-Acoustics 3010's. Will post more comments in separate thread.

Edit: The Talentcell Battery has a 5.5mm x 2.1mm barrel connector out, and that's what my cables are. The Aiyima amp, like many other 24-36v amps, has a 5.5mm x 2.5mm port, so I ordered an adapter and will wait until it arrives to play with my new toys.


Talentcell 24v Li-ion Battery.jpg
 
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Doodski

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#23
Here's a 24v Li-ion battery...

I purchased a Talentcell PB249B1 (42980mAh) powerbank on Amazon, and picked it up at the package forwarder yesterday. It has three different voltage outputs - USB 5v/2.4A, plus 12v/2.5A and 24v/5A.

It's charged fully, and I am about to try it with my 24vdc Aiyima ChiFi amplifier. Source will be my Cayin N3 DAP, and speakers a pair of Yamaha NS-A325 mini-monitors or larger Q-Acoustics 3010's. Will post more comments in separate thread.

View attachment 54268
I learn something new everyday and here at ASR it makes that even more :)
 

Xulonn

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#24
I learn something new everyday and here at ASR it makes that even more :)
You are correct that 24v batteries are not common. This Talentcell is new and expensive - $120. But it is what I have been waiting for - 24v and high capacity. People use them for CPAP machines and other medical devices where you don't want to run out of capacity.
 

tomchr

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#25
The acrylic case will break if you drive your car over it, the RNHP will not, it's in the review.
Also, the RNHP has a VESA mount on the bottom, so you can attach it to a stand. It seems pretty clearly targeted towards the studio crowd. That's probably also why the top/bottom of the chassis extend past the front/rear panels. That's so you don't snap the connector off if you drop something on the amp while it's plugged in.

Tom
 
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amirm

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Thread Starter #26
Someone asked what the Gain is for all three inputs. Here it is:

Gain:
XLR: 2.7 dB
RCA: 11 dB
3.5mm: 12.7 dB
 

Jimster480

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#29
I saw this a year ago or more.... it looked decent but the price was really up there.
Glad to see that it got tested and the performance is more mid-road for today.
 

somebodyelse

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#32
Datasheet gang error spec for the standard part is "-60dB to 0dB within 3dB -80dB to -60dB within 5dB possible depending on total resistance and taper."
 

YSC

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#34
No offense to the opamp used here.. the auralic Taurus mk II in mine used some also I think and cost me like $2000 back then, but the distortion and limited power of this RNHP is disappointing tbh
 

tomchr

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#35
Ah. So the power supply is a single +24 V DC supply from an AC/DC switching converter. That explains all the electrolytic caps. There's an input filter on the power supply (you can see the shielded inductor by the power inlet). The two gold caps are the output caps.

This could help explain the rise in THD at heavier load, however, that's not the only plausible explanation.

I wouldn't knock the NE5532. While it has been superseded in terms of performance by the LM4562/LME49720, OPA1612, etc., it's a quite capable opamp, in particular for the price.

Tom
 

tomchr

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#36
BTW: If you still have the amp on the bench, I'd love to see the multi-tone IMD.

Tom
 
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#37
This was my first decent amp And it served me well. It is now at my girlfriends and works well with my Tab A as an easy way to stream Qobuz

I just purchased the new Quicksilver Audio Headphone amp and it sounds incredible. The Neve is clinical sounding compared to the QS but still a good amp to have around.
 

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