TASCAM LA-40MKIII is a 4-channel bi-directional balanced/unbalanced line converter that seamlessly bridges professional and consumer audio equipment with studio-quality performance. Featuring four XLR and RCA inputs/outputs, it provides flexible connectivity for a wide range of applications, including studio recording systems, broadcast and streaming environments, and AV installations. The built-in channel linking matrix also enables the unit to function as an audio distribution amplifier (ADA) for feeding multiple recorders or handling multi-zone audio routing.Flexible Signal ConversionThe LA-40MKIII is built for studio-quality conversion between professional +4 dBu / -20 dBu balanced and consumer -10 dBV unbalanced line levels. With four channels of balanced-to-unbalanced and unbalanced-to-balanced conversion, XLR and RCA connectivity, LED signal indicators, and per-channel 12 dB trim controls, it enables precise level matching across studio, broadcast, streaming, and AV installation applications.Audio Distribution Amplifier FunctionThe LA-40MKIII can also operate as an audio distribution amplifier. Channel linking allows a single balanced or unbalanced source to feed multiple outputs, supporting 1-in/4-out or dual 1-in/2-out configurations. Ideal for multi-recorder feeds, signal distribution, and multi-zone audio routing.Main Features:4 channels of unbalanced-to-balanced conversion4 channels of balanced-to-unbalanced conversionLED indicators for signal presencePer-channel trim controls for fine level adjustment within +/-12 dBADA: Audio Distribution Amplifier- Unbalanced input signals can be distributed to multiple balanced outputs- Balanced input signals can be distributed to multiple unbalanced outputs- Configurable for various distribution setups, such as 1-input/4-output or dual 1-input/2-output systemsCompact 1U rack-mount sizeNominal unbalanced input/output level: -10 dBVNominal balanced input/output level: switchable +4 dBu / -20 dBuGND LIFT switch on balanced connectors to reduce ground loop noiseGND ALL LIFT switch for rack-level ground loop mitigationEquipped with a 3-prong AC power outlet independent of the main power switchSpecifications:Unbalance to Balance – Input (Unbalanced)- Connectors: RCA pin jack x 4- Input Impedance: 23k (all INPUT LINK switches are OFF)- Input Impedance: 5.7k (all INPUT LINK switches are ON)- Nominal input level: -10dBV +/- 1dB- Maximum input level: +9dBV- Indicator detection level (unbalanced input): -38dBV or moreUnbalance to Balance – Outputs (Balanced)- Connectors: XLR-3-32 equivalent x4 (1:GND2:HOT3:COLD)- Output Impedance: 94- Nominal load impedance: 10k- Minimum load impedance: 600- Nominal output level: +4dBu, +/-1dB (OUTPUT LEVEL switch set to +4dBu)- Nominal output level: -20dBu, +/-1dB (OUTPUT LEVEL switch set to -20dBu)- Maximum output level: +24dBuBalance to Unbalance – Input (Balanced)- Connectors: XLR-3-31 equivalent x4 (1:GND2:HOT3:COLD)- Input Impedance: 54k (all INPUT LINK switches are OFF)- Input Impedance: 13.5k (all INPUT LINK switches are ON)- Nominal input level: +4dBu, +/-1dB (INPUT LEVEL switch set to +4dBu)- Nominal input level: -20dBu, +/-1dB (INPUT LEVEL switch set to -20dBu)- Maximum input level: +30dBu (INPUT LEVEL switch set to +4dBu)- Maximum input level: +8dBu (INPUT LEVEL switch set to -20dBu)- Indicator detection level (balanced input): -24dBu or more (INPUT LEVEL switch set to +4dBu)- Indicator detection level (balanced input): -48dBu or more (INPUT LEVEL switch set to -20dBu)Balance to Unbalance – Outputs (Unbalanced)- Connectors: RCA pin jack x 4- Output Impedance: 200- Nominal load impedance: 10k- Minimum load impedance: 1k- Nominal output level: -10dBV, +/-1dB- Maximum output level: +/-18dBVGeneral Specifications- TRIM range: +/-12dB- Power: AC 100-240V, 50/60Hz- Power consumption: 6W- Weight: 3.0kg- Dimensions: 482.6 x 44.5 x 295 mm (W x H x D, including protrusions)- Note: 0 dBV = 1 Vrms, 0 dBu = 0.775 VrmsAudio Performance- S/N ratio: 90dB Nominal input and output level, 20 kHz LPF, A-WTD, OUTPUT LEVEL switch set to +4dBu- S/N ratio: 87dB Nominal input and output level, 20 Hz HPF + 20 kHz LPF, OUTPUT LEVEL switch set to +4dBu- Total harmonic distortion: 0.007% or less (1kHz, nominal input and output level)- Frequency response: 20 Hz 100 kHz +/-3dB (nominal input and output level)- Crosstalk: -90dB or more (1kHz, nominal input and output level, terminated with a 600 load)Compliance- RoHS compliant- Specifications and appearance are subject to change without notice