Tascam LA40MKIII
Line Amp 4Ch Bi-Directional


The LA-40mkIII line amplifier features a ±12dB trim control for better matching of levels between components. A signal present LED proves useful during system design and troubleshooting. The new models are packaged in black rack cases with standard chassis depth for easier wiring. The LA-40mkIII has four channels of unbalanced to balanced and another four channels of balanced to unbalanced out.


  • Balanced connectors: XLR
  • Unbalanced connectors: RCA
  • Signal Present LED per channel
  • Trim control for fine level adjustment of +/- 12dB
  • Input level: +4dBu/-20dBu, Output level: -10dBV, selectable per channel
  • Ground Lift switch per channel
  • All Lift Switch disables ground connections for entire unit
  • Earth terminal


Inputs and Outputs

  • Inputs 8 unbalanced RCA pin jacks
  • Inputs impedance 23k ohm (when all Input Link switches are Off)
  • 2.8k ohm (when all Input Link swiches are On)
  • Nominal input level -10 dBV +/-1 dB
  • Maximum input level +4.8 dB or more
  • Indicator detection level -36 dBV
  • Outputs 8 balanced XLR type connectors (Connector holes: 1 = ground, 2=hot, 3=cold)
  • Output impedance 94 ohm
  • Nominal load impedance 10k ohm
  • Minimum load impedance 600 ohm
  • Normal output level +4 dBu +/-1 dB (Output Level switch set to +4dB) -20 dBu +/-1 dB (Output Level switch set to -20dBu)
  • Maximum output level +23dBu or more


  • Trim range +/-12 dB
  • S/N ratio IHF-A/DIN 90 dB/87 dB (Output Level switch set to +4dB)
  • Total harmonic distortion 0.005 % or less (20 Hz HPF + 20k Hz LPF)
  • Frequency response 20 Hz - 100 kHz +/-3 dB (nominal input and output level)
  • Crosstalk -90dB or more (1kHz, normal input and output level, terminatedwith a 600 ohm load)

Physical specifications

  • Dimensions (W x H x D) 482 x 44 x 280 mm
  • Weight 3 kg (main unit)
  • Power requirements 100 - 240 V AC, 50/60 Hz
  • Power consumption 6 W
  • Supplied accessories Power cord set
  • Rack mount screw set
  • Owner's manual
  • Warranty card
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