Spotlight Audio
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- Joined
- Feb 11, 2023
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Apologies... think i got your and techno's posts mixed up ✌I use BJC but I think that you may be answering to someone else. As I said I personally don't have that issue.
Apologies... think i got your and techno's posts mixed up ✌I use BJC but I think that you may be answering to someone else. As I said I personally don't have that issue.
Yep, I stand corrected. The iFi iPowerX supply with DC out should not be used in this application. Thanks.Power Supply: “wall wart” style 16VAC transformer, dual-filtered, regulated +/- 16V rails
Yep, you’re right. In disbelief I contacted Schiit, and they confirmed AC in on the Mani. I find it puzzling because I thought one of the main purposes of a power supply in domestic gear was to convert AC to DC. I am not aware of having seen an “AC” wall wart before until this one, but perhaps they are more common than I thought. The Schiit Modi’s run off USB bus power or your phone charger.Look at the photo of the back of the unit. Says AC in. You typically would think all barrel connectors are DC in but you have to be careful. Usually it is marked like it is with the Mani.
Unless Schiit does something quite weird, that AC input very likely immediately feeds a bridge rectifier.AC in on the Mani
Perhaps with a different design, but you cannot swap a DC supply for the current model’s AC supply. I would not want anyone reading to be confused on this point.Unless Schiit does something quite weird, that AC input very likely immediately feeds a bridge rectifier.
Consequently, a nicely filtered external DC supply could be substituted for the transformer, mitigating Mani's AC-related noise.
Mine’s dead silent. Just sayin’.We were getting less transformer noise from our AP. Might be due to a delamination in the transformer we sent. Sadly, it happens.
I am sending Amir a new one. Should see better results without a humming transformer.
A Mani 3 by now?We were getting less transformer noise from our AP. Might be due to a delamination in the transformer we sent. Sadly, it happens.
I am sending Amir a new one. Should see better results without a humming transformer.
I also use a Denon (x3800h) along with an Emotiva Basx a3 amp, currently have a Darlington labs mp7 as my phono. I’m curious how you typically run your avr when listening to vinyl? Mode settings or pure/direct mode. Thanks!Just got my Mani 2 today and compared it to my original Mani 1 with a decibel meter to compare the background noise they produce.
Using my Teac TN-400S turntable with AT100E cartridge, both pre-amps are in their original configuration (gain input H/output L) which matches the cartridge.
Using a Monoprice 1.5ft RCA cable from the turntable to the pre-amp.
With the turntable off and AV receiver on full volume, the Mani 2 produced 3db less noise from my speaker's tweeter than the Mani 1.
Both were using the Mani 2's 16V 1000mA power supply. This was a direct swap so the cable runs did not move. The units were not stacked during testing.
That's a significant improvement in noise in my opinion.
View attachment 263853
View attachment 263854
I just leave it in Music: Stereo mode. Pure mode turns off audessy, which I need to fix my uneven bass response. I don't think there's a way to get a full analog signal path through the receiver in the first place.I also use a Denon (x3800h) along with an Emotiva Basx a3 amp, currently have a Darlington labs mp7 as my phono. I’m curious how you typically run your avr when listening to vinyl? Mode settings or pure/direct mode. Thanks!
Um, well… about that 16 VAC wall wart.
I was doing a search for used Schiit Mani (1 or 2) secondary sales on ePay and the various audiomarts (kind of a trendline analysis - very good equipment doesn’t show up as often as people tend to keep it, I think) and came across this:
“Upgrade Audiophile Power Supply For Schiit Audio MANI Phono Stage 16V AC L16-11”
A power filter/conditioner based upon a toroidal transformer and Japanese Nichicon capacitors (sure thing, from the heart of worldwide copyright violation land) AND…
YES, I READ AMIR’s post from 2 years ago on these.
Thing is, I don’t see that he ever tested one, I also don’t see that Schiit ever “fixed” the 50/60 Hz AC spike (is it even audible?) with a new/improved wall wart.
Was considering buying one to play with having dumped a Musical Surroundings Nova III because it HISSED after 2 years and I had given up on getting the mfr to accept a return for analysis/repair and sold it to someone who didn’t care/didn’t notice/hear the HISS in both channels. SUT works fine, but maybe not with all my cartridges, nice to have options.
So, simple question: did Schiit ever do anything to improve/fix/change the power supply filtering for the Mani 2?
Thank you.I recently purchased a new Mani 2 directly from Schiit. The 50/60 Hz AC spike (if it is indeed present) is inaudible on my system.
Can anyone help me explain what this sentence means?the amplifier gains drops to 30s which is too low relative to its competition.
It means that in Low-Low gain settings, the gain is in the region under 40 dB, which is too low to compare to other competing phonos with gain at or above 40 dB.Can anyone help me explain what this sentence means?