M2Tech Joplin MkIII 384/32 ADC with I2S output

The M2Tech Joplin MkIII is exactly what you need to connect your turntable to your computer or your all-digital Hi-Fi system.

The versatile 65dB analog input stage with variable input impedance allows the user to connect any phono cartridge without the need for a phono stage. When using a phono stage, the analog input can be set to 0 dB gain and 47 kΩ impedance to behave like the line input of any preamplifier or integrated amplifier.

The internal processing block allows the user to enable phono correction in the digital domain by selecting one of several available phono curves. The digitized data is sent to a variety of digital outputs as well as a USB port for writing to a file on a computer. An additional S/PDIF digital input provides a digital link to a computer, effectively providing it with a digital input.

Extremely high signal-to-noise ratio, vanishingly low distortion, and precise equalization curves provide an almost transparent connection between the turntable's cartridge, digital preamp, and computer.

• Device type: ADC phono stage
• Installation method: shelf, desktop
• Approximate frequencies (PCM): 44.1 kHz - 384 kHz
• Examples of I2S output frequencies: 44.1 kHz - 768 kHz (PCM), 64x - 256x (DSD)
• Resolution (PCM): 16 bit - 32 bit
• Inputs: analog unbalanced (RCA), S/PDIF (RCA)
• Outputs: S/PDIF (RCA), AES/EBU (XLR), Optical (Toslink), I2S
• USB: 2.0 high speed
• S/PDIF Input Sensitivity: 0.5V pp +/- 0.1V
• S/PDIF input impedance: 75 ohm
• S/PDIF output voltage: 0.5V pp +/- 0.1V
• S/PDIF output impedance: 75 ohm
• AES/EBU output voltage: 2V pp +/- 0.5V
• Output impedance AES/EBU: 110 ohm
• Signal-to-noise ratio (gain: 0 dB): 122 dBA

• THD + noise (gain: 0 dB): 0.0004%
• Minimum requirements: 1.3 GHz CPU, 1 GB RAM, USB 2.0 port
• Input Sensitivity: 2.55 Vrms (gain: 0 dB), 1.14 mV (gain: 65 dB)
• Analog Gain: 0dB, 10dB - 65dB (1dB steps)
• Digital Gain: 6dB - 8dB average with each phono equalization (Easily interfaces with MC cartridges with output voltages up to 4 - 500µV with minimal loss of resolution and signal-to-noise ratio)
• Analog Input Impedance
• I2S output modes: off, bypass (sampling rate as in menu settings), PCM x 1 (44.1/48), PCM x 2 (88.2/96), PCM x 4 (176.4/192), PCM x 8 (352.8 /384), PCM x 16 (705.6/768), DSD 64x, DSD 128x, DSD 256x
• Low pass filter: 5 kHz, 10 kHz, disabled

• High pass filter: 50 Hz, 16 Hz, disabled
• MPX filter (at 19 kHz): - 60 dB
• Clock Accuracy: +/-10ppm 0 - 60°C, 2ppm typically at 25°C
• EQ Numerical Gain: 22 dB (RIAA)
• Supply voltage: 15 V DC current
• Power Consumption (Operating): 4W
• Standby power consumption: 1W
• Dimensions (W x D x H): 200 mm x 200 mm x 50 mm
• Dimensions with connectors and feet (W x D x H): 200 mm x 210 mm x 55 mm
• Weight: 1.7 kg (ADC only)
• Net weight (incl. accessories): 2 kg
• Weight with packaging: 2.5 kg
• Color: silver with black
• Country (head office): Italy