Musician Audio R2R DAC Converter User Manual

: June 15, 2024
: musician audio

Table of Contents

Introduction
Product Information
Panel Information
Button Description
Taurus 12S pin configuration
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Audio R2R DAC Converter
User Manual

Musician Audio R2R DAC Converter

Introduction

Thank you for choosing MUSICIAN products!
Guangzhou LEZHIJIA Technology Co.,Ltd.(MUSICIAN Audio) was formally established 2020. The R & D team is formed by a group of enthusiasts with more than 20 years of audio research and development experience. It is committed to the following product: R2R discrete balanced decoders, balanced headphone amplifiers, balanced amplifiers, balanced pre amplifiers, headphones, passive speakers, and other audio products.
Tips

Do not cover newspapers, tablecloths, curtains, etc. on the machine, as this may prevent heat dissipation. If the temperature inside the machine is too high, it may cause a fire, damage the machine, or cause personal injury. When using switches, knobs or cables, do not use excessive force.
Only use the voltage specified by this machine. Using a voltage higher than the specified value is dangerous and may cause fire, damage to the unit, or personal injury.
Do not attempt to modify or repair this unit by yourself. If you need any service, please contact the MUSICIAN after-sales team through the official website.
If you plan not to use the machine for a long time, disconnect the power cord from the AC wall outlet. To strengthen the protection of this product, unplug the power cord from the wall outlet during lightning, or when no one is managing it, and when not using it for a long time. This will prevent the product from being damaged during lightning and power grid surges.

Product Information

Technical Highlights R2R DAC

Proprietary R2R+DSD architecture, true balanced 24Bit R2R+6Bit DSD (32 step FIR filter). Adopting AL TERA high efficiency chip. 0.005% precision resistor, low distortion, low noise power supply, FIFO buffer.
Each channel is equipped with an independent high-speed FPGA to control decoding through four sets of 0.005% R-2R network with low linearity error, high decoding speed and low digital noise.
The self-developed and designed digital filter works in 16 X Over Sampling mode, with 32bit input resolution for each filter stage, which can greatly increase the dynamic contrast, analyzing power, and more natural and delicate tone, and so on.
Dual crystal design, can accurately reproduce audio signals of different sampling rates, jitter is greatly reduced and stability is significantly improved.
The power supply adopts chopper rectification, customized MUSICIAN brand red shell capacitors, equipped with O-type 250W iron core transformer, multiple L T1763, L T3045 for 2 times regulator filtering, can effectively isolate the linear regulator for digital and analog part of the multi-stage power supply, which ensures that the DAC can provide low noise and stable power supply voltage.
DSD1024, PCM 1536KHz supports USB and I2S inputs (audio source needs to be compatible with this unit’s interface).
Proprietary USB audio solution based on the STM32 F46 Advanced AMR microcontroller.
Sycon USB driver licensed for Windows platforms
No drivers required for Mac and Linux

DSD
All inputs are DSD64 DoP, USB and I2S inputs are OSO1024.
PCM
All inputs are 24bits / 44.1 K, 48K, 88.2K, 96K, 176.4K, 192KHz. USB & I2S inputs are 1536KHz.
Digital Input
Coaxial, Optical, AES, USB, I2S-1, I2S-2
Clock Output
45.1 584MHz , 49.152MHz
Analog Output
XLR balanced, RCA single-ended
Please note that the Taurus RJ45/HDMI ports are not typical network/multimedia RJ45/HDMI ports. They are purpose-built I2 S ports. Do not connect them to a typical multimedia HDMI port (i.e. Blu-ray player/TV, etc.)/Ethernet network. The 12S wiring sequence can be selected and matched using the panel buttons.

Panel Information

Musician Audio R2R DAC Converter - Panel

1	Input source selection
2	Phase switching
3	On/Oft/Standby
4	OS/NOS buttons
5	Mute switching
6	MODE button
7	XL balanced output
8	RCA output
9	Clock output
10	Coaxial input
11	Optical input
12	AES input
13	12S input
14	USB input
15	Power connector

Taurus comes with a proprietary USB audio solution driven by the STM32F446.

License for Windows platforms Theydon USB Driver Download and install Theydon USB Driver for Windows
1. Connect a standard USB cable from the PC USB port to the USB Input.
2. Select the USB Input.
3. Check the PC audio device panel to detect connection to the machine
No driver installation required on Mac and Linux
No need to install the driver, just connect it and use it.
After connecting, in the sound settings, detect whether it is connected to the machine or not.

USB/I2S/ AES/OPT /COAX
Changes according to the sound source button
Light off: The sound source is not selected
Light on: The sound source is selected
Running light: single cycle light up when mute status

STANDBY
Lamp off: power on status
Lamp on: standby status| MODE
Lamp off: Clock has no output
Lamp on: Clock has output
---|---
PHASE
Light off: in phase
Light on: Reverse phase| OS/NOS
Light off: OS / Light on: NOS
44.1 K/48K
Varies according to the sampling rate
of the input signal| DSD
Lights off: PCM audio/lights on: DSD audio

Light off: The input signal is not at the sampling rate
Light on: The input signal is at this sampling rate

1X/2X/4X/8X
Varies according to the sampling rate n times the frequency of the input signal
Light off: The input signal is not n times the frequency of the sampling rate
Light on: The input signal is n times the frequency of the sampling rate

Button Description

STANDBY| STANDBY light off: In the startup state, press standby
STANDBY light on: In standby mode, press to start
---|---
INPUT-| In homepage mode: press the button to select the audio source to the left
In menu mode: Press the button to enter the clock output function setting
In the clock output function setting: press the button to switch the clock output frequency
In other function settings: no response when pressing the button
INPUT+| In homepage mode: press the button to select the audio source to the right
In menu mode: no response when pressing the button
In the niter function settings: press the button to enter the USB upgrade function settings
In other function settings: no response when pressing the button
PHASE| In homepage mode: Press the button to switch between in phase and out phase
In menu mode: Press the button to enter the 128 pin function settings (you need to select the I2S audio source first)
In the 12S pin function setting: Press the button to switch the I2S pin
In other function settings: no response when pressing the button
OS/NOS| In homepage mode: Press the button to switch between OS and NOS
In menu mode: Press the button to enter the DSD left and right channel function settings
In DSD left and right channel settings: Press the button to switch between L/R and R/L
In other function settings: no response when pressing the button
MUTE| In homepage mode: Press the button to switch between mute and
playback/also to enter menu mode and homepage mode
In menu mode: Press the button to return to homepage mode
In function settings: no response when pressing the button
MODE| In homepage mode: no response when pressing the button
In menu mode: Press the button to enter the filter function settings
In the filter function settings: press the button to switch between fast and slow roll down
In other function settings: no response when pressing the button

Function Setting Description

| Function settings| Button operation| LED light indication
---|---|---|---
USB upgrade function settings| First select the USB audio source, then
enter the flter function settings, and then
press the Input+button to enter the USB
upgrade function settings
{Note: Setting the USB upgrade function cannot be exited and can only be turned off or powered off)| Soloct USB audio source first>>>
MUTE>>>MODE>>>INPUT+| 8X light on+DSD light on
Press the Input+ button in the USB
upgrade function settings to enter the upgrade status| Input+ button to start upgrading| USB light flashing+
COAX light flashing: Start upgrading
12S pin function settings| First select any I2S audio source, then
press the MUTE button to enter menu
mode, and then press the PHASE button
to enter I2S pin function settings| MUTE button + PHASE button| Tho solccted I2S light is on+
the DSD light
is on
Press the PHASE button in the I2S pin
tunction settings to switch between I2S pins
(Note: After 5 seconds, no operation will
automatically return to the homepage mode)| PHASE button for switching| 1X(DATA), 2X(BCK), 4X(LRCK)
Lights off as positive
1X(DATA), 2X(BCK), 4X(LRCK)
Light on as negative
DSD left and right channel function settings| Press the MUTE button to enter menu
mode, then press the NOS button to enter
DSD left and right channel function settings| MUTF button + NOS button| OPT light on + DSD light on
Press the NOS button in the DSD left
and right channel function settings to
switch between L/R and R/L| NOS button for switching| 44.1 K light on: L/R
48K light on: R/L
Clock output function settings| Press the MUTE button to enter menu
mode, then press the Input button to
enter clock output function settings| MUTE button + Input button| DSD light on
Press the Input button in the clock output
function setting to switch the clock output
frequency
(Note: After 5 seconds, no operation will
automatically return to the homepage mode)| Input- button for switching| 44.1 K light on
48K light on
1 X light on
2X light on
4X light on
AGING MODE| After turning on, the USB power supply mode is normally open (Note: Normal USB power supply can be restored by shutting down or powering off the power)| Simultaneously press and holINPUT+, INPUT– MODE| 44.1K, 48K
(When the 44.1K light is off, it indicates that the version number has flashed oul, and when the 48K light is off, it indicates that the revision number has flashed out.)
View version number| Simply enter the USB upgrade function
settings to view the current program
version number (Note: Setting the USB upgrade function cannot be oxide and can only bo turned off or powered off)| Select USB audio source first >>>
MUTE>>>MODE>>>INPUT+| 1X, 2X
{The number of flashes of 1X light indicates the current version number, and the number trashes 2X light indicates the current revision number)

12S Pin (Each 12S audio source corresponds to each 12S pin)

12S Pin ►	lX(DATA)	2X(BCK)	4X(LRCK)

Taurus 12S pin configuration

Please note that there are no industry standards for 12S connections. Different brands/products have different 12S line sequences.
If you use a standard HDMI cable, you can make it compatible with most devices through the following mode setting methods:

Select the audio source input to I2S-1 or I2S-2;
Press the PHASE button in the I2S pin function settings to switch the I2S pin.
Stop the operation after selecting a satisfactory sound, and the machine will automatically exit the mode setting function after 5 seconds.

Musician Audio R2R DAC Converter 1 Through the above 12S settings, MUSICIAN products can basically meet the needs of most brands on the market.
If the above settings prevent normal playback (such as hissing). This should not be considered a defective product, but rather a matching failure. The recommended solution is to use a customized HDMI cable (pin diagram on the right). Musician Audio R2R DAC Converter 2 Basic Parameters
Function buttons: INPUT-, INPUT+, PHASE, STANDBY, OS/NOS, MUTE, MODE
Input method: Coaxial, Optical, AES, USB, I2S-1 , I2S-2 Output method: XLR, RCA, external clock (45.1 584MHz/ 49.1 52MHz)
Power input: 115V /60Hz ~ 230V /50Hz
Bare metal size: 420mm 380mm 95mm (W D H) (height includes base)
List of Packaging Items

Taurus
User manual
Warranty card1]

Warranty

We take pride in the quality of our products with strict quality control checks.
To give you more confluence, all of our products are provided with a three- years warranty. Within the first 30 days from the date of purchase, most items can be returned for refund or exchange if meet the following conditions. Wish you enjoy a wonderful shopping experience!
RETURNABLE ITEMS
Items that can be returned/refunded or exchanged with in 30 days of receipt must comply with the following standards

Any returned items must be accompanied by all accessories, hardware, manuals or instructions, and in the same “new” state as when shipped to you.
Any returned items will be evaluated after receipt. Of course, we will not refund any defective products 5caused by improper handling, improper use, tampering or improper use.
If there is no complete original packaging (original packing box, foam falling, etc.) at the time of return, 25%6 replenishment fee will be charged.

Tips: The items should be transported back safely. Before we received, You will take full responsibility. If you choose to replace, we will ship your replacement items free of charge.
RETURN FEE AND ADDRESS
We aim to provide services that benefit all our loyal customers. Global customers can return products to our Chinese warehouse. Please always contact us before returning items to relevant addresses.

All transportation costs are borne by the customer. This includes shipping costs for returns or exchanges. Shipping costs are non-refundable.
Please contact your local post office to confirm the actual return shipping fee before shipping back. We recommend that you use the cheapest postal service if available.