Specifications

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Power

DAC

Users

Manual

Rev 3 (9/06)

Sign Magnitude Ladder daC SpeCifiCationS

inputS: CoaxiaL, toSLink, baLanCed

aeS/ebu, MSb network

rCa outputS: 3.6 V rMS (10 Vpp)

output iMpedanCe: 50 ohMS at 0 db

baLanCed output: 7.5 V rMS (20 Vpp)

SaMpLing frequenCy: 32 khz to 384 khz

digitaL fiLter: 16 tiMeS oVerSaMpLing

SLew rate: >2500 V/MiCroSeCond

SettLing tiMe: <90 nanoSeCondS

dynaMiC range: 136 dba MeaSured

noiSe fLoor: < -145 db

thd+n: .002

SignaL to noiSe ratio: 140 db

ChanneL Separation: >130 db

MaSter CLoCk: +/- 2.5 ppM Low Jitter

ControL featureS: fiLter option

battery Mode

Summary of content (8 pages)

PAGE 1
Power DAC Users Manual Sign Magnitude Ladder DAC Specifications Inputs: RCA Outputs: Output Impedance: Balanced Output: Coaxial, Toslink, balanced AES/EBU, MSB Network 3.6 V RMS (10 Vpp) 50 ohms at 0 dB 7.5 V RMS (20 Vpp) Sampling Frequency: 32 kHz to 384 kHz Digital Filter: 16 times Oversampling Slew rate: >2500 V/microsecond Settling Time: <90 nanoseconds Dynamic Range: 136 dBA measured Noise Floor: < -145 dB THD+N: .002 Signal to Noise Ratio: 140 dB Channel Separation: >130 dB Master Clock: +/- 2.
PAGE 2
Power DAC Users Manual Unique Product - a Battery Powered DAC? This product combines a unique combination of a very high performance DAC and the ultimate power supply - batteries. Batteries give an amazingly high instantaneous current with no noise. Nothing else can compare. A Simple Approach The Power DAC takes a different approach from other MSB products.
PAGE 3
Unique Technology - the past and the future Over 10 years ago early DACs were all 16 bit ladder DACs, with a precision laser-trimmed resistor creating the appropriate analog level for each of the bits. The DACs worked well and sounded good. They were quite expensive as very accurate resistors were required. Then along came the “single bit” DACs. Rather than using a resistor to create an analog level, pulse width modulation was used.
PAGE 4
More About the Digital Filter One of our primary goals at MSB is to provide the music lover with the most accurate musical experience possible. During years of careful design and improvement of our custom discrete DACs, which form the heart of your Power DAC, we realized that the Power DACs sound quality was no longer limited by them. We soon narrowed the problem to the Digital Filter which was feeding our DACs.
PAGE 5
Clock Jitter The timing of the DACs conversion clock also has a large impact on sound quality. Any periodic frequency change or “jitter” causes a loss of focus in the reproduced audio. The high power and large memory space of the SHARC DSP we use allows us to offer a unique Ultra Clock to your MSB 16x Digital Filter. The Ultra Clock adds two ultra precision, ultra low jitter TCXO oscillators and custom clock handling circuitry to your board.
PAGE 6
have to return your Power DAC to MSB for reprogramming. MSB will charge you a small fee for this service. If you have accidentally loaded firmware that you do not wish to have on your Power DAC do not try to cancel it while it is loading, simply wait for the update to complete and then load the firmware you do wish to have in your Power DAC.
PAGE 7
Front Panel Controls Play Mode and Battery Display – The PLAY MODE button is used to switch the Power DAC into the highest quality playback mode. When the battery charger is plugged in, pressing the button disconnects the battery charger internally. The blue LED above the button turns on. When pressed again the LED goes out and the charger is connected. A charge LED lights to indicate current charging status. When the battery charger is disconnected, the button turns the DAC on and off.
PAGE 8
Clock Feature (advanced users only) – On the back of the unit is a special 5 pin XLR type connector. It is a clock interface that allows multiple Power DAC products to be synchronized, allows the Power DAC Clock to be output and allows an external clock to be input to the Power DAC. See Clock Interface. The MSB Network One of the most powerful feature of the Power DAC is the MSB network.