Power Amplifier – BA-235

The TOA BA‑235 is a compact, high‑performance 35 W power amplifier designed for reliable background music (BGM) playback and clear general announcements. Ideal for use in bars, retail stores, banquet rooms, and smaller commercial venues, this amplifier delivers exceptional audio quality with simple operation and versatile installation options.

When paired with the optional BG‑220 (20 W) or BG‑235 (35 W) mixer amplifiers, the BA‑235 enables convenient 2‑channel broadcasting—perfect for facilities requiring separate program distribution zones.

Key Features

• Optimized for Simple BGM Applications: Designed for single‑source setups without paging or MOH requirements.
• Remote Master Volume Control: Convenient adjustment from compatible wall controllers.
• RCA Line Input: Supports standard consumer audio devices.
• Thermal Protection: Automatically shuts down the system to prevent overheating damage.
• Security Volume Knobs: Prevent unauthorized adjustments in commercial environments.
• Rack-Mount Options: Compatible with optional rack-mounting hardware.
• UL/cUL Listed: Safety-certified for US and Canadian installations.

Specifications

Power

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

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 controls centered)

Inputs

• Line Input: 0 dB / +4 dB selectable, 10 kΩ, unbalanced
  Connection: 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 in, line-level connection using removable terminal block
• Output Regulation: 2 dB or less (no load to full load, 1 kHz)

Controls

• Master gain control
• Bass tone control
• Treble tone control
• Input level selector switch
• Remote volume control capability
• 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
• 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

Optional Accessories

• Rack mounting bracket: MB‑25B‑BK
• Rack mounting bracket: MB‑25B‑J