Power Amplifier – BA-235

The TOA BA‑235 is a reliable 35 W power amplifier designed for high‑quality background music and clear announcement applications. Ideal for bars, retail stores, banquet rooms, and other commercial environments, it delivers dependable audio performance with straightforward operation. When paired with the optional BG‑220 (20 W) or BG‑235 (35 W) mixer amplifiers, the BA‑235 enables flexible 2‑channel broadcasting for expanded system configurations.

Key Features

• Optimized for Simple BGM: Perfect for single‑source background music systems without paging or MOH requirements.
• Remote Master Volume Control: Allows convenient level adjustment from external wall controllers.
• RCA Line Input: Supports consumer audio players, media devices, and music sources.
• Thermal Protection Circuitry: Automatically shuts down the unit to prevent overheating damage.
• Security Volume Knobs: Prevents unauthorized tampering in public‑facing installations.
• Rack‑Mounting Options: Compatible with optional brackets for professional equipment racks.
• UL/cUL Listed: Certified for safe installation in U.S. and Canadian markets.

Specifications

Power

• Power Source: 120 V AC, 60 Hz
• Rated Output: 35 W
• Power Consumption: 90 W (rated output), 52 W (cULus)

Audio Performance

• Frequency Response: 50 Hz – 20 kHz
• Total Harmonic Distortion: 0.5% or less at 1 kHz (rated output)
• Tone Control: Bass ±10 dB at 100 Hz; Treble ±10 dB at 10 kHz
• Signal‑to‑Noise Ratio: 80 dB or more (20 Hz – 20 kHz, tone centered)

Inputs

• Line In: 0 dB / +4 dB selectable, 10 kΩ, unbalanced
  Connections: Removable terminal block or RCA jack

Outputs

• Speaker Output: 4 Ω, 25 V (18 Ω), 70 V (140 Ω); balanced, removable terminal block
• Bridge Output: Parallel line input via removable terminal block
• Output Regulation: Within 2 dB (no load to full load at 1 kHz)

Controls

• Master gain control
• Bass tone control
• Treble tone control
• Input level selector switch
• Remote volume control
• Power ON/OFF switch

Indicators

• Power LED
• Signal LED
• Peak LED

Environmental

• Operating Temperature: 0°C to +35°C (32°F to 95°F)
• Operating Humidity: 35% to 80% RH (no condensation)

Construction

• Panel: ABS resin, black
• Case: Steel plate, black, painted finish
• Dimensions: 210 (W) × 94.3 (H) × 265 (D) mm (8.27 × 3.71 × 10.43")
• Weight: 4 kg (8.82 lb)

Included Accessories

• Volume control cover: YA‑920 × 1
• Removable terminal plug (2‑pin) × 3
• Removable terminal plug (4‑pin) × 1