The RBH Sound SA-400 is a dedicated monoblock Class A/B subwoofer amplifier designed to power passive subwoofers.

Key Specifications

• Power Output: 400 Watts RMS @ 4 ohms (800W max power)

• Amplifier Type: Discrete Class A/B

• Total Harmonic Distortion (THD): < 0.03% (at 1W)

• Impedance / Stability: 4-ohm stable

• Voltage Selector: 115V / 230V (110V/220V switchable)

• Weight: 25 lbs (11.3 kg)

• Dimensions: 4" H x 17.75" W x 14" D (without rack mounts)

Controls & Features

• Front Panel: Power button, Auto (standby/signal detection), Boost (+4dB at 25Hz), Phase Control (0°–180°), Crossover (defeat/full-range), Crossover Frequency (40Hz–180Hz), Master Volume, and Dimmer.

• Rear Panel & Connections: Line/LFE inputs and outputs, speaker-level input and output (with 100Hz high-pass throughput), subwoofer output (4–16 ohms), fuse access, and voltage selector.

• Protection: Short circuit and thermal protection.

Tested and working properly.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

Promoted similar listings













Listed4 days ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
Model
  • SA400 Subwoofer Amplifier
Finish
  • Black
Categories
Year
  • 2008 - 2013

Product safety information may be available here.

Darren 's Shop

Wesley Chapel, FL, United States
Joined Reverb:2026

Reverb Protection

Simple Returns, Secure Transactions, Human Support

Learn more

Secure Checkout

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Oops, looks like you forgot something. Please check the fields highlighted in red.