MSB Technology The Select DAC, The Reference DAC User Manual
The Select DAC
User Guide
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guides, rmware, and drivers:
www.msbtechnology.com
Technical support email is:
techsupport@msbtech.com
05.29.18
Technical specications
Supported Formats
(Input depedent)
Digital Inputs 4x Advanced isolated input module slots
XLR Analog Inputs 100K Ohm Balanced
XLR Analog Outputs 3.57Vrms Maximum (Digital Input)
Volume Control Purely passive constant impedance analog attenuation
Display Custom discrete LED audio clock synchronous display
Controls Isolated RS-232
Chassis Dimensions Width: 17.5 in (444 mm)
Shipping Dimensions Width: 25 in (635 mm)
Included Accessories User Manual
44.1kHz to 3,072kHz PCM up to 32 bits
1xDSD, 2xDSD, 4xDSD, 8xDSD
Supports DSD via DoP on all inputs
12Vrms Maximum
Isolated when not selected
12Vrms Maximum (Analog Input)
75 Ohm Balanced
Galvanically isolated
1dB steps
Adjustable brightness and auto-o feature
IR Remote
Knob + 4 Buttons
Depth: 17.5 in (444 mm)
Height without feet: 3 in (79 mm)
Stack height: 3.625 in (92 mm)
Weight: 25.5 lbs (11 kg)
Depth: 25 in (625 mm)
Height: 10 in (254 mm)
Weight: 55 lbs (24 kg)
MSB Remote
Micro USB Charging Cable
4X Spiked Feet
4x Plastic inserts for feet
Setup and Quick Start
The interface is quite simple with few user controls. Input source defaults on to auto switching.
The display will let you know if you have an active input. On power up, the volume is reset to the
programmed startup level. Shipping default is 70. Turn the volume knob up until you hear music.
Power The DAC comes with a high performance powerbase. The powerbase automatically
detects and switches between 240V and 120V. This is not a switching supply that works
at any voltage, but a linear supply with automatic switching of the transformer leads.
The power supply is switched on and o with a button on the front or via the IR remote.
The LED in the front of the Power Base indicates red when OFF and white when ON.
Always allow three to ve hours for the DAC to warm up and reach optimal operating
temperature.
Inputs The DAC comes with the digital input modules of your choice. Connect any digital input
to any active digital audio source. The frequency and bit depth of the incoming signal will
be displayed on the front panel.
Outputs A range of Output Modules are available. Connect the balanced or single-ended analog
outputs to any amplier. The output level is controlled with the knob or remote.
Burn-In
The feedback we receive leads us to recommend at least 100 hours of burn-in on this DAC. Customers
generally report improvement up to one month.
User Interface
Menu Button The square button is single purpose. It will enter the setup mode at the top
Input Selection The right and left arrows switch inputs. The ‘Auto’ mode will be in the list of
Mute The circle button can be used to quickly mute the audio of the DAC.
Volume Knob This knob adjusts the volume between 0 and 106.
Display The display shows the Input, sample rate, bit depth, and volume.
of the menu tree. If in the setup, and it doesn’t matter where, this button
will exit the setup and return to the normal operational mode.
inputs. The right and left arrows switch inputs. If ‘Auto’ is selected, the unit
will automatically switch inputs based on priority (Input slot B is higher than
Input slot A) with the analog input being lowest priority. When a source with
a higher priority becomes active, the unit will automatically switch to the
new higher priority input. Toggling through the inputs manually will defeat
any auto switching. When in the setup menu the arrows move right and left
through the menu structure.
About the 4 input module slots
The DAC has four input module slots. They are labeled A through D. There are two classes of input
modules, analog and digital. Analog modules must be placed adjacent to the analog output module.
They can be either be additional analog inputs or a second analog output module. Digital modules can
be placed in any position. Each module is completely self contained. It is recognized by the DAC and
identied on the display. When the module is not in use it is disabled.
Available Digital Input Modules
ProI2S
XLR S/PDIF A single XLR digital input with a word sync output.
Optical/Coaxial S/PDIF A Toslink and Coaxial digital input with a word sync output.
MQA USB A single USB interface for playback via a computer based device. This
Renderer A renderer interface for use on a home network or server. (See
Pro ISL MSB proprietary interface for use with MSB transports. This module
MSB’s proprietary interface for use with MSB transports. This module
provides two inputs.
module provides support for MQA decoding. (See USB manual for
operation and setup details)
Renderer manual for operation and setup details)
provides one input.
Available Preamps
The DAC is available with one of two output modules.
Balanced Preamp Oers one set of balanced analog inputs and outputs. Provides
volume control with our passive constant impedance volume control
technology.
Single-Ended Preamp Oers one set of single-ended analog inputs and outputs. Provides
volume control with our passive constant impedance volume control
technology.
Additional Analog Inputs and Outputs
In addition to the primary output module, additional analog inputs and a secondary analog output
can be added.
Isolated Analog Output Provides a second analog output as single-ended or balanced.
Only one analog output module can be added per DAC.
Isolated Sub Analog Output Provides an isolated sub-woofer output as single-ended or balanced.
Only one can be added per DAC.
Additional Analog Input Provides an extra analog input connection as single ended or balanced.
Multiple inputs can be installed.
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