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+--- Thread: D220 phono stage MM input impedance (/Thread-D220-phono-stage-MM-input-impedance)
D220 phono stage MM input impedance - disarmamant - 11-Aug-2017
Has anyone here measured the actual resistance of the Devialet phono input with the configuration set to MM and the resistance at 'High'.
I read somewhere that it measures around 14K ohms on the high setting. I doubt that's correct as most MM cartridges expect to see a load of 47K.
I'm using a Koetsu Black Goldline into a 1:10 SUT into the Devialet phono stage configured for MM on the high setting.
The hiss from the phono is much better using the SUT over a direct input with the loading at 100 ohms.
If the input resistance is only 14K on the high setting my SUT may not be working optimally.
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D220 phono stage MM input impedance - disarmamant - 21-Aug-2017
Anyone?
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RE: D220 phono stage MM input impedance - watchnerd - 23-Sep-2017
Have you asked Devialet support?
And, yes, I agree, 14k is too low for carts designed for 47k.
RE: D220 phono stage MM input impedance - Sandeepmenon - 13-Nov-2017
(21-Aug-2017, 20:23)disarmamant Wrote: Anyone?
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Hi,
I wanted to check if you got the answer to this question. I am also planning to use a SUT so wanted to make sure I have the right resistor on the SUT to match this.
Thanks,
Sandeep.
RE: D220 phono stage MM input impedance - watchnerd - 18-Nov-2017
I asked support about the loading of the phono stage and got incredibly vague, evasive answers.
RE: D220 phono stage MM input impedance - rbsound - 30-Nov-2017
The 14k number comes from a 2013 Stereophile review. This MM Devialet phone stage problem is discussed in this thread I started (initially to review the Expert Pro upgrade) https://devialetchat.com/showthread.php?tid=3959
The Stereophile review of the phono stage can be found here https://www.stereophile.com/content/devialet-d-premier-da-integrated-amplifier-phono-stage
I'm thinking of biting the bullet and trying an external phono stage, perhaps the Lehmann Black Cube SE II.
RE: D220 phono stage MM input impedance - ogs - 23-Jul-2018
This is now an old thread and I guess many have read it in thumb5's reporting from the OAC event in July 2018 where Devialet answered this on the question of impedance on the MM input of amplifiers:
A: It was 16.7 kΩ on the D-Premier (reported as 14 kΩ by Stereophile) but has always been 47 kΩ on all Expert models.
RE: D220 phono stage MM input impedance - watchnerd - 23-Jul-2018
(23-Jul-2018, 07:29)ogs Wrote: This is now an old thread and I guess many have read it in thumb5's reporting from the OAC event in July 2018 where Devialet answered this on the question of impedance on the MM input of amplifiers:
A: It was 16.7 kΩ on the D-Premier (reported as 14 kΩ by Stereophile) but has always been 47 kΩ on all Expert models.
Thank you so much for that info!!
I hadn't read that update from OAC so this is great new information for me.