JBL Club A5055 – 5-Channel Car Amplifier (50W x4 + 500W x1)

The JBL Club A5055 is a compact, do-it-all amplifier that drives a complete car-audio system from one chassis. Class AB fronts/rears deliver detailed mids and highs, while the dedicated Class D sub channel provides controlled low-end punch. With variable high-/low-pass filters (32–320 Hz, 12 dB/oct) on the main channels, a variable low-pass (32–320 Hz) plus 0–12 dB bass boost @ 45 Hz and a phase switch on the sub channel, tuning is precise and straightforward. A wired remote bass control (RBC) is included for easy sub level tweaks from the driver’s seat. Compact size, speaker-level inputs, and full on-board protection make installation flexible and reliable. Buy now to power front, rear, and sub from one proven JBL amp. JBL+1

Key features

• 5-channel amplifier for full-system builds (front, rear, sub).

• Power ratings: 50W x4 + 320W x1 @ 4 Ω; 65–75W x4 + 500W x1 @ 2 Ω; 140–150W x2 bridged @ 4 Ω + 500W x1. (Retailers list 65W; owner’s manual lists 75W—both commonly referenced.) 

• Class AB (front/rear) + Class D (sub) topology.

• Variable crossovers & bass boost (0–12 dB @ 45 Hz); phase switch (0°/180°) on sub channel. 

• Speaker-level & preamp inputs with auto turn-on; compact chassis for tight installs. 

Technical specifications

• Continuous power: 50W x4 + 320W x1 @ 4 Ω; 65–75W x4 + 500W x1 @ 2 Ω; 140–150W x2 bridged @ 4 Ω + 500W x1.

• Filters: Front/Rear HP/LP 32–320 Hz (12 dB/oct); Sub LP 32–320 Hz (12 dB/oct).

• Bass boost: 0–12 dB @ 45 Hz; Phase: 0°/180° (sub).

• Inputs: Speaker-level & RCA; Turn-on modes supported.

• S/N ratio: >80 dB; THD+N @ rated: <1%. 

• Fuse rating: 30 A × 3; Recommended power wire: 4-gauge.

• Dimensions (W×H×D): 14-3/16" × 2-1/16" × 7-1/8" (360 × 51 × 180 mm).

• Weight: 3.98 kg.

• Warranty: 1 year.

What’s in the box

• JBL Club A5055 amplifier

• Wired remote bass control (RBC) + 2 self-tapping screws (M3×15 mm)

• 4 mounting screws (M4×53 mm)

• Owner’s manual, 2× JBL stickers, 1× logo badge
  (Wiring kit not included; bare-wire-to-RCA adapters commonly supplied with some bundles. Use 4-gauge power/ground.)