Details

Extron MVC 121 xi (part number 60-2048-01) — a quarter-rack digital audio mixer that takes two microphone or line sources plus a stereo line feed and delivers two stereo outputs, one variable and one fixed.

Small rooms rarely justify a full DSP, but they still need microphone gain, phantom power, level control and a clean split between a variable feed for the loudspeakers and a fixed feed for a recorder or codec. The MVC 121 xi covers exactly that. Both mic/line channels supply switchable 48 VDC phantom power and offer 78 dB of gain range in 0.1 dB steps, with equivalent input noise below -120 dBV. Everything runs through 24-bit, 48 kHz conversion, and the analogue path measures better than 100 dB signal to noise with THD+N under 0.02 percent. Configuration is handled by Extron DSP Configurator Pro over the front-panel USB-C port, with SIS control available over RS-232 and four digital logic inputs for wall plates or contact closures.

Key Capabilities

Two mono mic/line inputs with switchable +48 VDC phantom power
Mic/line gain adjustable from -18 dB to +60 dB in 0.1 dB steps
One stereo line level input, -18 dB to +24 dB gain range
Two stereo outputs: variable attenuation -100 dB to 0 dB, fixed gain -24 dB to +12 dB
24-bit / 48 kHz PCM conversion; S/N above 100 dB, THD+N below 0.02 percent
RS-232 and front-panel USB-C control, four digital logic inputs with 5 VDC supply

Where It Is Used

Huddle rooms, small classrooms, clinical conference spaces and training rooms that combine a lectern microphone, a wireless receiver and a program source into one loudspeaker feed while sending an untouched mix to a recorder or conferencing codec. Its quarter-rack size fits inside lectern furniture or an under-desk mount.

Specifications at a Glance

Inputs: 2 mono mic/line and 1 stereo line, all balanced/unbalanced on 6-pole 3.5 mm captive screw
Outputs: 2 stereo line level, 100 ohms balanced / 50 ohms unbalanced, above +21 dBu balanced
Audio: 20 Hz-20 kHz +/-0.3 dB, crosstalk below -90 dB, gain error +/-0.1 dB
Enclosure: metal, 1.7 in. H x 4.3 in. W x 3.0 in. D, 0.5 lb (0.2 kg)
Power: PS 1205 C external supply, 4.2 W device; 3 year warranty, 7 year Everlast supply warranty

Also referenced as Extron MVC121xi, MVC-121-xi, part number 60204801.

Specifications

Part Number: 60-2048-01

Manufacturer: Extron

Model: MVC 121 xi

Condition: New

Gain: Balanced output 0 dB; unbalanced output -6 dB

Frequency Response: 20 Hz to 20 kHz, ±0.3 dB

THD + Noise: <0.02%, 20 Hz to 20 kHz, at maximum balanced output (unweighted)

S/N (Analog Input to Output): >100 dB, 20 Hz to 20 kHz, at maximum balanced output (unweighted)

Crosstalk: <-90 dB @ 20 Hz to 20 kHz, fully loaded

Calibration Reference: A/D: 1 kHz, +4.0 dBu sine (1.228 Vrms) = -17 dBFS. D/A: 1 kHz, -17 dBFS sine = +4.0 dBu (1.228 Vrms)

Mic/Line Inputs (1-2) – Number/Signal Type: 2 mono, mic/line, balanced/unbalanced

Mic/Line Inputs – Connectors: (1) 6-pole, 3.5 mm captive screw, dual-mono, balanced/unbalanced

Mic/Line Inputs – Impedance: >10k ohms balanced/unbalanced

Mic/Line Inputs – Nominal Level: +4 dBu when level is set to 0 dB gain; adjustable from -60 dBu to +4 dBu

Mic/Line Inputs – Maximum Level: +21 dBu (at rated THD + N) when input gain is set to 0 dB

Mic/Line Inputs – Equivalent Input Noise: <-120 dBV (1 µVrms) at 40 dB input gain

Mic/Line Inputs – CMRR: >65 dB typical

Mic/Line Inputs – Gain Adjustment: -18 dB to +60 dB in 0.1 dB steps, adjustable per input

Phantom Power: +48 VDC, enabled/disabled via software

Line Level Input – Number/Signal Type: 1 stereo, line-level, balanced/unbalanced

Line Level Input – Connectors: (1) 6-pole, 3.5 mm captive screw, stereo, balanced/unbalanced

Line Level Input – Impedance: >10k ohms balanced/unbalanced

Line Level Input – CMRR: >60 dB typical

Line Level Input – Gain Adjustment: -18 dB to +24 dB in 0.1 dB steps, adjustable per input

Audio Output – Number/Signal Type: 2 stereo, line-level, balanced/unbalanced (Variable L/R, Fixed L/R)

Audio Output – Connectors: (2) 6-pole, 3.5 mm captive screw, stereo, balanced/unbalanced

Audio Output – Impedance: 100 ohms with balanced lines (or 50 ohms with unbalanced lines)

Audio Output – Gain Error: ±0.1 dB channel to channel

Audio Output – Maximum Level (Hi-Z): >+21 dBu balanced, >+15 dBu unbalanced

Output Attenuation (VARIABLE): -100 dB to 0 dB, controlled in 0.1 dB steps

Output Gain (FIXED): -24 dB to +12 dB, controlled in 0.1 dB steps

A/D, D/A Conversion: 24-bit / 48 kHz PCM

Serial Host Control Port: (1) 3-pole, 3.5 mm captive screw. Bidirectional RS-232: 38400 baud, 8 data bits, 1 stop bit, no parity. Pin-1 = Tx, Pin-2 = Rx, Pin-3 = G

USB Control Port: 1 front-panel USB-C (female), USB 2.0 high-speed

Program Control: Extron DSP Configurator Pro for Microsoft Windows 10/11; API is the Extron Simple Instruction Set (SIS)

Digital Logic Inputs: (1) 6-pole, 3.5 mm captive screw. Pin-1 to Pin-4 = Read, Pin-5 = +5 VDC @ <150 mA, Pin-6 = GND. Programmable pullup resistor 3k ohm. Input voltage 0 to +12 VDC max, low-to-high threshold >2.8 VDC, high-to-low <2.0 VDC, input impedance >10k ohms. Pin-5 has over-current and short circuit protection that resets after power cycling.

External Power Supply: PS 1205 C (part number 70-1175-01). Input: 100-240 VAC, 50-60 Hz, 0.25 A. Output: 12 VDC, 0.5 A, 6 watts

Power Input Requirements: 12 VDC / 0.46 A

Power Consumption: Device 4.2 watts; device and power supply 5.2 watts

Thermal Dissipation: Device 13.0 BTU/hr; device and power supply 16.6 BTU/hr

Cooling: Passive, unventilated

Temperature/Humidity: Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing. Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing

Mounting: Rack mount with an optional 1U high rack shelf; furniture mount with an optional under-desk mounting kit

Enclosure Type: Metal

Enclosure Dimensions: 1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide) (43 mm H x 109 mm W x 76 mm D). Depth excludes connectors and knobs.

Product Weight: 0.5 lbs (0.2 kg)

Regulatory Compliance: Safety: CE, c-UL, UL. EMI/EMC: CE, C-Tick, FCC Class A, ICES, VCCI. Environmental: complies with the appropriate requirements of RoHS, WEEE

Warranty: 3 years parts and labor

Everlast Power Supply Warranty: 7 years parts and labor

Diagram

Resources

Brochure | MVC 121 xi 60-2048-01 | MVC 121 xi (mvc_121xi_revA.pdf)

Brochure | MVC 121 xi 60-2048-01 | MVC 121 xi (mvc_121xi_revA_IT.pdf)

Brochure | MVC 121 xi 60-2048-01 | MVC 121 xi (mvc_121xi_revA_FR.pdf)

Brochure | MVC 121 xi 60-2048-01 | MVC 121 xi (mvc_121xi_revA_GE.pdf)

Brochure | MVC 121 xi 60-2048-01 | MVC 121 xi (mvc_121xi_revA_SP.pdf)

Manual | MVC 121 xi 60-2048-01 | MVC 121 xi Setup Guide

Manual | MVC 121 xi 60-2048-01 | MVC 121 xi User Guide

Specifications | MVC 121 xi 60-2048-01 | MVC 121 xi

Panel Drawing | MVC 121 xi 60-2048-01 | MVC 121 xi

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Extron MVC 121 xi 3-Input Audio Mixer with Phantom Power 60-2048-01

Name: Extron MVC 121 xi 3-Input Audio Mixer with Phantom Power 60-2048-01
Brand: Extron
SKU: EXTRON-MVC121XI-60204801
Availability: InStock

Manufacturer: Extron

Type: Audio Products

Extron MVC 121 xi Compact Audio Mixer

• Two mono mic/line inputs with switchable +48 VDC phantom power
• Mic/line gain from -18 dB to +60 dB in 0.1 dB steps
• One stereo line level input with -18 dB to +24 dB range
• Variable and fixed stereo outputs on separate connectors
• 24-bit / 48 kHz PCM conversion; S/N above 100 dB
• THD+N below 0.02% and crosstalk below -90 dB
• RS-232, front USB-C and four digital logic inputs

Need service or repair? No matter the age, brand, or manufacturer Ampronix can repair it! Free, no charge for initial evaluations!

SKU: EXTRON-MVC121XI-60204801