That's the first time I've read that. It might explain why I have two A80s die with popping etc from broken amp boards. Or the amp boards weren't designed or made to last - who knows?Fretless wrote: ↑Tue Oct 01, 2019 8:57 am As a side-note I have also read something about the problem RD had with recent NOS DAC's and NVA amps. The lack of any filtering allows all sonic information to pass through to the amps - even frequencies way above the limits of human hearing. Could be that these ultrasonics were causing a harmonic resonance in the amp circuits that gave them trouble. Older Metrum DAC's certainly do not have this problem and I know that RD and Tomasz discussed modifying the amps to correct this specific problem.
DAC to the Future
- George Hincapie
- Posts: 321
- Joined: Wed Aug 21, 2019 7:46 pm
- Location: Buckinghamshire, England
- Has thanked: 252 times
- Been thanked: 176 times
Re: DAC to the Future
Headphone Amplification
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
- George Hincapie
- Posts: 321
- Joined: Wed Aug 21, 2019 7:46 pm
- Location: Buckinghamshire, England
- Has thanked: 252 times
- Been thanked: 176 times
Re: DAC to the Future
You guys are behind the curve with digital tweaks! I have been meaning to update you all on my adventures, but life I guess. I'll try and do so later because it isn't a 5 minute job. Hopefully you might be able to implement some of the approaches in your own systems and let me know how they work for you.
Headphone Amplification
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
- Fretless
- Posts: 9390
- Joined: Wed Nov 12, 2014 12:15 pm
- Location: Somewhere in Holland
- Has thanked: 1529 times
- Been thanked: 2358 times
Re: DAC to the Future
Looking forward to that, George.George Hincapie wrote: ↑Sat Oct 12, 2019 12:12 pm You guys are behind the curve with digital tweaks! I have been meaning to update you all on my adventures, but life I guess. I'll try and do so later because it isn't a 5 minute job. Hopefully you might be able to implement some of the approaches in your own systems and let me know how they work for you.
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 + LS6+ Sabaj A10a (2) + Little Bear MC2
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 (phono)Aiyima A07 MAX (2) + 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
- slinger
- Posts: 9384
- Joined: Wed Aug 22, 2012 4:30 pm
- Location: The Garden of England
- Has thanked: 4845 times
- Been thanked: 3215 times
Re: DAC to the Future
Yes. I forgot to mention that.
Amps - NVA P50, AP30, A40, Stanislav Palo Tube Headphone Amp BB 85
Speakers - Monitor Audio Silver RX2
Cables - NVA LS1+LS3, SSC, Gotham S/PDIF, IBRA Optical
Digital - NAD C516BEE, SONY ST-SDB900 DAB TUNER, TEAC UD-H01 DAC
Analogue - Pro-Ject Debut Carbon Esprit SB, Graham Slee Gram Amp 2 Phono
Cans - Grado SR80, ATH-M50X
Speakers - Monitor Audio Silver RX2
Cables - NVA LS1+LS3, SSC, Gotham S/PDIF, IBRA Optical
Digital - NAD C516BEE, SONY ST-SDB900 DAB TUNER, TEAC UD-H01 DAC
Analogue - Pro-Ject Debut Carbon Esprit SB, Graham Slee Gram Amp 2 Phono
Cans - Grado SR80, ATH-M50X
-
- Posts: 1027
- Joined: Mon Jul 29, 2019 8:16 am
- Location: Grimsby/Phnom Penh
- Has thanked: 1547 times
- Been thanked: 429 times
- CN211276
- Posts: 6589
- Joined: Tue Aug 09, 2016 9:29 am
- Location: Cardiff
- Has thanked: 1454 times
- Been thanked: 997 times
Re: DAC to the Future
My Mscaler upsamples to 765 kHz and has not caused my A80s any problems.George Hincapie wrote: ↑Sat Oct 12, 2019 12:10 pmThat's the first time I've read that. It might explain why I have two A80s die with popping etc from broken amp boards. Or the amp boards weren't designed or made to last - who knows?Fretless wrote: ↑Tue Oct 01, 2019 8:57 am As a side-note I have also read something about the problem RD had with recent NOS DAC's and NVA amps. The lack of any filtering allows all sonic information to pass through to the amps - even frequencies way above the limits of human hearing. Could be that these ultrasonics were causing a harmonic resonance in the amp circuits that gave them trouble. Older Metrum DAC's certainly do not have this problem and I know that RD and Tomasz discussed modifying the amps to correct this specific problem.
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 Black
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 Black
RIP Doc
- George Hincapie
- Posts: 321
- Joined: Wed Aug 21, 2019 7:46 pm
- Location: Buckinghamshire, England
- Has thanked: 252 times
- Been thanked: 176 times
Re: DAC to the Future
I'm pleased for you, because having two amps die is not fun.
Will you get the TT2 as well? Or happy with Qutest?
Headphone Amplification
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
- CN211276
- Posts: 6589
- Joined: Tue Aug 09, 2016 9:29 am
- Location: Cardiff
- Has thanked: 1454 times
- Been thanked: 997 times
Re: DAC to the Future
I am happy with the Qutest. The pre amp and headphone facilities of the TT2 are of no use to me. I am happy with my soon to be upgraded P90SA and rarely listen to headphones near the hifi. The Chord Mojo suits me fine as I can listen anywhere in the house and out the garden.George Hincapie wrote: ↑Sat Oct 12, 2019 6:50 pmI'm pleased for you, because having two amps die is not fun.
T
Will you get the TT2 as well? Or happy with Qutest?
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 Black
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 Black
RIP Doc
- Fretless
- Posts: 9390
- Joined: Wed Nov 12, 2014 12:15 pm
- Location: Somewhere in Holland
- Has thanked: 1529 times
- Been thanked: 2358 times
Re: DAC to the Future
On the subject of USB output streamers I have spotted that Allo are now making a USBridge Signature. If I read this correctly they have taken a Pi board and restructured it with all sorts of individual power lines and separated out the Ethernet and USB connections from the same bus. AND you can attach a DigiOne Sig board to it to give ultra-high purity output on USB and Coax.
USBridge Sig was build using RPI compute module so from a software point of view, this will give you access to the latest kernels (way ahead of any competitor). The focus of the device is to lower the noise on USB bus. We chose an excellent USB hub IC (TI) and a separated Ethernet to USB Ic (Axis).
To lower the noise of the USB, we had to lower noise on EACH rail. In total, USBridge Sig uses more than 30 LDOs. Even the SD card power rail has a dedicated LDO. There are zero switching elements on board.
Of course, since this is based on RPI compute, we decided to include the standard RPI connector. Anything that works on an RPI will work on the USBridge Sig. For example, you can use a DigiOne / DigiOne Sig to make a full fledge streamer that outputs USB, BNC and coaxial.
https://www.allo.com/sparky-eu/usbridge ... e-pcb.html
USBridge Sig was build using RPI compute module so from a software point of view, this will give you access to the latest kernels (way ahead of any competitor). The focus of the device is to lower the noise on USB bus. We chose an excellent USB hub IC (TI) and a separated Ethernet to USB Ic (Axis).
To lower the noise of the USB, we had to lower noise on EACH rail. In total, USBridge Sig uses more than 30 LDOs. Even the SD card power rail has a dedicated LDO. There are zero switching elements on board.
Of course, since this is based on RPI compute, we decided to include the standard RPI connector. Anything that works on an RPI will work on the USBridge Sig. For example, you can use a DigiOne / DigiOne Sig to make a full fledge streamer that outputs USB, BNC and coaxial.
https://www.allo.com/sparky-eu/usbridge ... e-pcb.html
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 + LS6+ Sabaj A10a (2) + Little Bear MC2
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 (phono)Aiyima A07 MAX (2) + 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
- George Hincapie
- Posts: 321
- Joined: Wed Aug 21, 2019 7:46 pm
- Location: Buckinghamshire, England
- Has thanked: 252 times
- Been thanked: 176 times
Re: DAC to the Future
Nice update Fretless, thanks.
I have to say that Allo just keep knocking it out of the park. Their EPs embarrass devices costing so much more it isn't even funny. A nice LPSU with the Allo EP of your choice and you really aren't going to want for much.
Or are you?
*Edit*
I would like to see them offer AES as an output. Fingers crossed they do at some point.
I have to say that Allo just keep knocking it out of the park. Their EPs embarrass devices costing so much more it isn't even funny. A nice LPSU with the Allo EP of your choice and you really aren't going to want for much.
Or are you?
*Edit*
I would like to see them offer AES as an output. Fingers crossed they do at some point.
Headphone Amplification
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz
Linear Tube Audio MZ3
Headphones
HifiMan Sundara • HiFiMan Arya Stealth Edition • ZMF Vérité Closed Ltd (Stabilised) • ZMF Atrium Open Ltd (Hawaiian Koa) • ZMF Aeolus Ltd (Mexican Bocote)
Digital
Audial S5 • Pi2AES 2.0
Cables
Forza Audio Works • Blue Jeans • DH Labs • Periapt
Power
Farad • Tomanek
Sources
Roon • Tidal • Qobuz