Massdrop x Grace Design m9XX DAC/Amp Discussions | Drop

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Massdrop x Grace Design m9XX DAC/Amp

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ViperGeek

Nov 22, 2015

Quick Question: I'd like to get a second Grace-blessed USB power adapter. Does anyone know the Amazon or Monoprice URL for the unit shipped with the m9XX?

Nov 22, 2015

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fuzzybaffy

Nov 22, 2015

ViperGeekI've been looking for the same thing, but all I can seem to find are 1A or 2.1A USB "chargers" or "power adapters", and I have no idea if that's appropriate for the m9xx. I'd like to know the answer to this as well.

Nov 22, 2015

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AudioMan612

218

Nov 22, 2015

fuzzybaffyI believe any good 2.1A one should be fine. Unfortunately, you don't see too many of these cheap switching power supplies run through test equipment and the results published.

Nov 22, 2015

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ViperGeek

Nov 23, 2015

AudioMan612By eye and spec, it looks like this is the Monoprice power supply shipped with the m9XX:
http://www.monoprice.com/product?p_id=10273 http://www.amazon.com/Monoprice-Wall-Charger-2-1A-International/dp/B00DIGB3GI

Nov 23, 2015

Neotribal

Nov 23, 2015

ViperGeekFound it. Only seeing wholesale links though: http://sztoye.en.alibaba.com/product/60304605771-800960494/Made_in_China_alibaba_factory_price_5V_2a_usb_power_adapter_with_UK_EU_US_AU_Plug_for_mobile_phone_charger_manufacturer.html
I've been using an iPad charger

Nov 23, 2015

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Michael_Grace

432

Grace Design

Nov 23, 2015

ViperGeekWe purchase the USB power supplies from Toye Technology. We tested about 8 different power supplies from various vendors. We primarily looked at output noise but also at load regulation. The Toye was among the lowest noise units, had third party IEC 60950-1 safety compliance, and was available with both US and Euro plug options. I can not recommend the Monoprice unit. It was by far the noisiest. (Somehow a couple of our test samples got sent out with review units early on...) We will get the Toye power supplies up on our web store for purchase shortly. If anyone needs one now email Alex Vallejo alex@gracedesign.com -Michael

Nov 23, 2015

Neotribal

Nov 23, 2015

Michael_GraceWoo, I found the right one on Alibaba (earlier comment) ;)
Glad to hear that we can buy direct soon, I wanted a couple of spares... I leave the included Toye one here at work and carry around an OEM iPad charger for travel, they both seem to work fine for me (haven't noticed any audible difference on the Apple one).

Nov 23, 2015

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