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[其他] HERUS DAC + headphone amp

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發表於 2013-10-4 15:24:02 | 顯示全部樓層 |閱讀模式
Resonessence Labs - HERUS

Asynchronous USB Audio 2.0
24bit 352.8Ks/S
DXD and DSD64 and DSD128
2.4VRMS output to Headphone (600 Ohms to 32 Ohms)

HERUS is our smallest form-factor, audiophile quality USB to Headphone DAC. It uses the USB Audio 2.0 Asynchronous protocol and supports DSD64 and DSD128 (Uses DoP protocol 1.1 over USB for DSD) as well as high data rate PCM at 24bits up to 352.8Ks/S. It is a USB powered device that achieves more than 100dB of SNR, (typically 108dB) and is capable of driving 2.4V RMS, (ie 6.8V pk-to-pk) into headphones from 600 Ohms to 32 Ohms. The distortion in all cases is better than 0.005% (85dB): the measured THD+N is typically 89dB for 32 Ohms and 90dB (about 0.003%) for 600 Ohms.

HERUS is designed to operate with MS Windows, MAC OS and Linux. You may download our Thesycon USB Audio 2.0 driver to enable USB Audio 2.0 on Windows. HERUS uses the ESS 9010-2M DAC, our custom code, and our own asynchronous algorithms that run in a generic Cypress USB interface chip.

We use Resonessence designed, advanced power line processing circuits that can reliably deliver more voltage range than the USB provided 5V, and we maintain the SNR of the power supply to a degree such that HERUS exhibits well over 100dB of SNR at the headphone output. HERUS also has a very low 0.2 Ohms output impedance that prevents external noise sources coupling into the output.

All Resonessence products feature upgradable firmware and hardware and despite its physically small size, HERUS also contains Resonessence upgradable hardware and firmware.

HERUS is machined from a solid block of aluminum and is 63.5mm (2.5in) long, by 31.7mm (1.25in) wide and 19mm (0.75in) high. It has just two connectors: a USB type ‘B’ socket on one end and a TRS 1/4inch Stereo Headphone connector at the other end. HERUS, like all Resonessence products is Designed, Manufactured, Tested and Shipped in Canada.

HERUS will enumerate to the controlling computer and register itself as being able to handle volume control internally.  

CAD$350

Power         Into 32 Ohms         126 mW
Power         Into 60 Ohms         95 mW
Power         Into 300 Ohms         19 mW
Power         Into 600 Ohms         9.5 mW

DXDHDSD.png HERUS-LR.png

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發表於 2013-10-4 16:56:39 | 顯示全部樓層
This Herus dac shall be good!  

But its enemy is Geek designed by Light Harmonics (maker of Da Vinci dac).
Geek is also DXD- & DSD128- capable!
http://www.mustgeekout.com/?ref=AudioStream
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 樓主| 發表於 2013-10-4 20:07:41 | 顯示全部樓層
CKKeung 發表於 2013-10-4 16:56
This Herus dac shall be good!   

But its enemy is Geek designed by Light Harmonics (maker  ...

maybe, but they use different DAC chip, different sound, so one is for BB fans, the other is for ESS fans... 000 2s14r3n.jpg

Two more ESS DAC...support DSD
wadia INTUITION-01
waintforne.jpg

North Star Design Excelsio...
2.jpg

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發表於 2013-10-4 23:30:51 | 顯示全部樓層
ok102006 發表於 2013-10-4 20:07
maybe, but they use different DAC chip, different sound, so one is for BB fans, the other is for E ...

Herus & Geek 都是靠USB供电,又都體積細小,內部對电源的處理多數有限,這對ESS可能較為不利。
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