The JamMate PRIMUS a25
is a most powerful gear for MIDI and audio recording process.

As combination of MIDI controller and audio interface,
all you need to produce music is just the PRIMUS a25 and your computer.  
Conveniently, PRIMUS a25 is equipped with MIC preamp, instrument preamp,
line in/out, headphone preamp and MIDI controllers. And PRIMUS a25 is USB bus-powered,
so it is no additional power required.
PRIMUS a25 gives you total control over MIDI and audio parameters.

You can experience ultimate USB technology of JamMate with this product
 

    25-key MIDI keyboard controller with
      16 channel MIDI I/O
    24-bit / 96 kHz Audio interface
    8 assignable MIDI controller knobs and
      encoders
    Function keypads and a data wheel with
      3 digit 7-segment LED display
    5 fully-editable internal user banks
    4 presets optimized for bundled
      demo software and 1 useful preset
    Pitch bend and modulation wheels
    Sustain pedal jack
    2 line inputs (1/4” TS), 1 MIC input (1/4” TRS)
      and 1 Hi-Z input (1/4” TS)
    2 line outputs (1/4” TS) / Headphone output with
      level control
    Direct monitor switch for zero-latency monitoring
    USB 2.0 bus powered
    Additional 9V DC power socket
    Supports WDM, ASIO, DirectSound and
      Core Audio driver with low latency
    Native Instruments Pro53 DEMO, FM8 DEMO
      B4II DEMO and Battery 3 DEMO
      software included

                Minimum system requirement

               <PC>
                Intel Pentium 4 or equivalent and
                compatible CPU
                256MB of RAM
                One available USB port
                Microsoft Windows® XP or later
              <Mac>
                Macintosh with G4 or better processor
                256MB of RAM
                One available USB port
                Mac OS 10.3 or later

 
            
      JamMate PRIMUS a25
      Installation CD with Native Instruments DEMO software
      Standard USB cable
      This quick start user guide

<Analog Audio>

1. Sample rate supports

44.1, 48, 88.2, 96 kHz

2. Analog Line Input

1) Input Type

Line input 1,2

2) Connector Type

1/4" TS Phone jack

3) Peak level

0dBFS @ +6dBV

4) Programmable gain

-64dB ~ +24dB (0.5dB step size)

5) Impedance

About 10K Ohm

3. MIC Input

1) Input Type

MIC input for dynamic microphone

2) Connector Type

1/4" TRS Phone jack

3) Preamp Gain

+60dB (TBD)

4) Peak Level

0dBFS @ 20mV

5) Programmable gain

-64dB ~ +24dB(0.5dB step size)

6) Impedance

About 1K Ohm

4. Hi-Z Input

1) Input Type

High Impedance input for instrument

2) Connector Type

1/4" TS Phone jack

3) Peak level

0dBFS @ +0dBV

4) Programmable gain

-64dB ~ +24dB(0.5dB step size)

5) Impedance

About 1M Ohm

5. Analog Output

1) Output Type

Line Output 12

2) Connector Type

1/4" TS Phone jack

3) Peak level

+0dBV @ 0dBFS

4) Attenuation

-64dB ~ +0dB(0.5dB step size)

5) Impedance

Less than 30 Ohm

6. Headphone Output         

1) Output Type

Headphone amplifier

2) Connector Type

1/4" TRS(stereo) Phone jack

3)Load Impedance Range

32-300 ohm (for the best performance)

4) Output Power

60mW @ THD<0.1% ; Vpp = 3.5V

<Digital Audio>

1. Sample rate supports

44.1, 48, 88.2, 96 kHz

2. A/D Converter

1) SNR

102dBA(0dB @ fs=48kHz)

2) DR

102dBA

3) THD

- 95dB(1kHz, -1dBFS)

4) Interchannel Isolation

90dB

3. D/A Converter

1) SNR

108dBA(0dB @ fs=48kHz)

2) DR

108dBA

3) THD

-97dB(1kHz, 0dBFS)

4) Interchannel Isolation

100dB

<Interface>

1. USB

1) USB Port

USB2.0 format

2. MIDI

1) MIDI in and MIDI out ports(DIN-5pin)

<Hardware>

Keyboard

25 Keys (with velocity)

Display

7 segments, 3 characters (LED)

Power Supply

9v 300mA (DC Adaptor) DC adaptor or USB Bus Power

Size (W) x (D) x (H)

16.93” x 10.04” x 0.28”

430mm x 255mm x 85mm

Weight

6.65lbs

3.02kg

 
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