Music Fidelity DACs

MX-DAC

http://www.musicalfidelity.com/mx-dac
The MX DAC has inputs for: 2 x coax (up to 24bit 192 kHz PCM), 2 x optical (up to 24bit 192kHz PCM) and asynchronous USB up to 24bit 192 kHz PCM as well as DSD 64 and DSD 128.
Also, all inputs whether from coax, optical or USB, are processed in the DSD domain. This desirable feature gives a warmth and humanity to the sound that simple digital conversion doesn’t achieve.
The MX DAC has both single ended and balanced outputs.
MX-DAC – Specifications
DAC Structure
Sample rate converter: SRC4392 up-sampling data to 192kHz
Digital to Analogue converter: PCM1795 32 bit / 192kHz Multi-bit Sigma-Delta type
Performance
Output Voltage: 2 Volts RMS single-ended (RCA)
Output Voltage: 4 Volts RMS balanced (XLR)
PCM THD: <0.002%
PCM THD (+ noise): <0.003%
DSD THD: <0.003%
DSD THD (+ noise): <0.006%
PCM Frequency Response: –3dB, 2Hz to 90kHz
PCM Frequency Response: –3dB, 2Hz to 40kHz
Channel Separation: -110dB
Capabilities
Coaxial Inputs: S/PDIF up to 24 bit / 192kHz
Optical Inputs: S/PDIF up to 24 bit / 192kHz
Inputs
2x RCA coaxial connector SPDIF 32-192 kbps
(16-24 bit stereo PCM)
2x TOSLINK optical connector 32-192 kbps
(16-24 bit stereo PCM)
1x USB type ‘B’ connector
Asynchronous data stream at up to 24-bit/192kHz PCM as well as DSD64 and DSD128
(Determined by source file/computer settings)
Outputs
1x line level RCA (single-ended)
1x XLR Male sockets (balanced) to EIA RS-297-A
General
Dimensions – WxHxD (mm): 220 x 53 x 215
Weight (unpacked / packed): 1.9Kg / 2.4Kg
Power Consumption: <0.25 Watts standby, <1 Watt max.
Supplied Accessories
1x 5v / 2A DC power supply (90-250VAC universal worldwide supply)
Windows driver CD
User manual

V90-DAC

http://www.musicalfidelity.com/v90-dac
V90-DAC – Specifications
Performance
Jitter: <12 picoseconds peak to peak
THD(+ noise): <0.004% 20Hz to 20 kHz
Frequency Response: +0, –0.1dB, 20Hz to 20 kHz
Crosstalk: -104dB, 20Hz to 20 kHz
Signal / Noise ratio: -117dB, 20Hz to 20 kHz
Inputs
1x RCA coaxial connector SPDIF 32-192 kbps (16-24 bit stereo PCM)
2x TOSLINK optical connector 32-96 kbps (16-24 bit stereo PCM)
1x USB type ‘B’ connector – Asynchronous data stream at up to 24-bit/96kHz (Determined by source file/computer settings)
Outputs
1x line level RCA (phono)
General
Dimensions – WxHxD (mm): 170 x 47 x 102
Weight (unpacked / packed): 600g / 1.1 kg
Supplied Accessories
1x 12v 500mA DC power supply

Emotiva DACS


Stealth DC-1 PRECISION BALANCED 24/192 FULLY DIFFERENTIAL DAC WITH PROFESSIONAL BALANCED OUTPUTS
https://emotiva.com/products/dacs/electronics/dacs/stealth-dc-1
Frequency Response
20 Hz to 20 kHz + / – 0.1 dB @ 44.1k sample rate
20 Hz to 40 kHz + / – 0.1 dB @ 96k sample rate
20 Hz to 70 kHz + / – 0.1 dB @ 192k sample rate
THD+N
0.00033% or less @ all sample rates
IMD (SMPTE)
0.0025% typical
S/N Ratio
95 dB @ all sample rates; 16 bit word length
115 dB @ all sample rates; 24 bit word length
Headphone Amplifier Output Power (from digital sources):
2.5 VRMS max into 10 Ohms @ < 0.01% THD (625 mW)
7.1 VRMS max into 47 Ohms @ < 0.02% THD (1070 mW)
7.26 VRMS max into 100 Ohms @ < 0.02% THD (525 mW)
7.32 VRMS max into 300 Ohms @ < 0.02% THD (175 mW)
7.35 VRMS max into 600 Ohms @ < 0.02% THD (90 mW)
Headphone Amplifier Output Power (from analog input):
(note: 2.5 VRMS analog input required for full output into 47 ohms or higher)
2.5 VRMS max into 10 Ohms @ < 0.003% THD (625 mW)
7.1 VRMS max into 47 Ohms @ < 0.003% THD (1070 mW)
7.2 VRMS max into 100 Ohms @ < 0.006% THD (510 mW)
9.23 VRMS max into 300 Ohms @ < 0.004% THD (280 mW)
9.27 VRMS max into 600 Ohms @ < 0.007% THD (140 mW)
Input Connectors
One pair unbalanced analog audio (consumer level); gold plated solid machined RCA
One AES/EBU digital audio (XLR)
Three S/PDIF digital audio (1 x RCA, 1 x BNC, 1 x Toslink optical)
One USB digital audio input (“type B” USB connector; UAC2)
Output Connectors
One pair unbalanced analog audio (consumer level); gold plated solid machined RCA
One pair balanced analog audio (pro level; +6 dBV); XLR
Two headphone connectors, front panel (2 x 1/8” stereo “mini”)
USB Audio
Stealth DC-1 appears to computer as “USB audio device”
UAC2 drivers required (provided) for computers running Windows (XP, Vista, 7, 8)

Power Source
115 VAC or 230 VAC; manually switched (switch on bottom of chassis)
Power consumption: approximately 15 watts
Standard IEC AC power inlet on rear panel
(Removable / interchangeable power cord; included.)
Main AC Power rocker switch on rear panel
Fuse: 20mm x 5mm; 1 A / 250 V fast acting; T1AL250V (internal)
Size and Weight
Size: 1.75” high x 8.5” wide x 10” deep (including connectors and knobs).
Weight: 2.2 pounds (1 kg)

(Next page Big Ego 32 BIT / 384K USB DIGITAL TO ANALOG CONVERTER)

Jolida Glass FX Tube DAC III

jolida-fxtubedaciii_black

While very affordable, especially for a tube DAC that can possibly give some warmth or indeed, an analog sound/feel to CDs and digital media. I have one concern and that is the very short warranty on something of this nature. The Jolida Glass FX Tube DAC III has an unusually short warranty of only 6 months limited parts and labor with 3 months on the tubes (3 months for tubes makes sense though). This is unusually stingy in the industry. There are no details about build and such on the manufacture site, save the specs which I listed below.
http://www.jolida.com/product/glass-fx-tube-dac-iii

There is also a version with Bluetooth ability called the Glass FX Tube DAC III W with much the same specs and price.

Tech Specs:
Output Level: 0 V to 2.3V (±1dB, 47K ohms)(SIN SIGNAL 0dB SPDIF IN)
Frequency Response: 20-20 KHz (±0.5dB)
Bandwidth: 10Hz to 70kHz + 1dB
SNR >90dB ( 20Hz-20kHz)
Dynamic Range 126 dB
Distortion THD: Less than 0.01% (1kHz)
Headphone Impedance 30 Ohms
Circuit Type: Ultra Linear, Class AB
Tube Complement: 2 pcs. 12AX7 pre-amplifier
Power Requirements: 110V-120 VAC 60Hz 90 watts-standby, 240 watts maximum (220 VAC 50Hz option)
Dimensions: 8 inches wide by 7 inches deep by 3 inches high
Weight: 7.5 lbs net, approximately 10 lbs.packaged
Construction Details and Features:
USB: 24/96 up sampling to 192 Hz
Toslink and coaxial: 24/192Hz
Galvanic Isolation: ADuM 1250 chips
Asynchronous Burr Brown Chip AD1896
Volume control and headphone jack
DAC Chip: PCM 1798
State the Art Components: capacitor filters, gold plated RCA jacks,