I thought it was bullshit but Russ Andrews may be having similar issues. Just got the latest catalogue and he is sending measurement equipment to anyone purchasing his latest BMU to determine mains voltage so they can be individually tailored. BTW the latest RA product appears to be borrowing from NVA ideas ?Dr Bunsen Honeydew wrote: ↑Thu Dec 20, 2018 12:53 pm Yes he has a low voltage transformer as I have found them best. So I now match the secondary to the low point in UK mains as so many people seems to be over voltage. I have one guy consistently at 248v. I am aiming now for 215 / 220v for 240v in. If you order primary and secondary to be the same then you fall foul of the regulation which boosts out voltage by about 10v.
If that is the problem I can swop for a higher secondary voltage one as I can do 120/120 or 115/115 or 110/110 or even in extreme cases 100/100. It is almost becoming me sorting out the voltage feeds being all over the place.
Metrum onyx DAC and NVA amps
- Classicrock
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Re: Metrum onyx DAC and NVA amps
I Know What I like (In Your Wardrobe)
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Re: Metrum onyx DAC and NVA amps
Maybe its time to bring back the multiway voltage setting switch on the back of kit
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Re: Metrum onyx DAC and NVA amps
A chance post on ASR shows a particular Metrum NOS DAC with severe response spikes at 40k and 80k - ish. The level of these spikes is way above distortion level in modern amps and the 'noise floor' in the background is more than many amps.. I know, it's just graphs and may not mean anything and these frequencies can't be heard by humans, but there's plenty of discussion there regarding NOS DACs and the compromises involved above the CD limit of 21khz or so.
Hanging on in quiet desperation is the English way...The time has gone, The song is over, Thought I'd something more to say...
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Re: Metrum onyx DAC and NVA amps
Metrum have ceased trading and I wonder if the issues reported in this thread have something to do with it and NVA amps are not the only ones affected. It would seem that the company went down hill in recent years and this is connected to the designer leaving and setting up his own company.i
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
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Re: Metrum onyx DAC and NVA amps
Most amps have filters, so I doubt it.CN211276 wrote: ↑Thu Apr 30, 2020 3:24 pm Metrum have ceased trading and I wonder if the issues reported in this thread have something to do with it and NVA amps are not the only ones affected. It would seem that the company went down hill in recent years and this is connected to the designer leaving and setting up his own company.i
I used a Metrum dac for a couple of years with my NVA amps and had no problems.
The designer leaving (and customers following them to the new company) sounds the most likely cause, to me.
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- Fretless
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Re: Metrum onyx DAC and NVA amps
He is Cees Ruijtenberg. I'll have a look later for the company. Busy now.
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
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Re: Metrum onyx DAC and NVA amps
Sonnet Digital Audio I believe.
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
- CN211276
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Re: Metrum onyx DAC and NVA amps
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
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