Benchmark LA4
Reference line-level preamplifier / monitor controller
Monitor Controller$2,950Manufacturer list price
Specifications
- Type
- Monitor Controller
- Description
- Reference line-level preamplifier / monitor controller
- Topology
- THX-AAA feed-forward error-correction line amplifier, relay-based precision attenuator
- Signal path
- Analog
- Channels
- 2
- Channel format
- 2.0 (stereo)
- Form factor
- Compact chassis (standard feet) or rackmount kit
- Connection
- Analog only
- Powered
- Yes
- Power (W)
- 12 typical / 17 max / 0.33 standby
- Frequency response
- -0.003 dB @ 10 Hz, -0.001 dB @ 20 kHz; -3 dB bandwidth 0.1 Hz-500 kHz
- Impedance (Ω)
- 60 (output impedance)
- Introduced
- 2018
- Country of manufacture
- USA
Details
Controls: Optical encoder volume knob, color touchscreen, optional IR remote, balance control, -20 dB dim, soft unmute, per-input gain offset, home-theater bypass, 2x bidirectional 12V trigger I/O
I/O: Analog in: 2x XLR balanced pairs + 2x RCA unbalanced pairs. Analog out: XLR L/R + XLR mono sum (balanced), RCA L/R (unbalanced). No digital I/O, no headphone output.
Notes: FLAG (device_class judgment call): LA4 is a line-level preamp / monitor controller (relay attenuator, balance, dim, home-theater bypass, multi-source switching); classified here as Monitor Controller since it's designed to sit between source/DAC and power amp with a dedicated volume/UI, but 'Preamp' is an equally valid label -- FLAG. Price shown as range across standard/rackmount and with/without-remote configurations. Year_intro (2018) inferred from third-party review coverage, not stated on current catalog page -- FLAG.