FOUR CHANNEL CLASS-D AMPLIFIER - A4N100PD

The PTPL Precision Four Channel Class-D Power Amplifier is engineered to deliver exceptional sound clarity, high efficiency, and long-term reliability in professional audio installations. Packaged in a compact 1U rack form factor, it is ideal for integration into space-constrained environments without compromising performance. The amplifier is designed for mission-critical applications such as conference rooms, training centers, auditoriums, command & control facilities, and high end AV infrastructures.

General

• Amplifier Type: Four Channel, Class D, Professional Power Amplifier

• Channels: 4 Independent Channels

• Rated Output Power: 2 × 100 W RMS @ 4/8 Ω

• Bridged Mono Mode: 200 W RMS into 8 Ω

• Application: Conference Rooms, Auditoriums, Classrooms, Professional AV Installations

Audio Performance

• Frequency Response: 20 Hz – 20 kHz (±0.5 dB)

• Signal-to-Noise Ratio: ≥ 100 dB (A-weighted)

• THD+N: ≤ 0.1% (1 kHz, rated power)

• Crosstalk: ≥ 75 dB @ 1 kHz

• Damping Factor: > 200 (8 Ω, 20 Hz – 1 kHz)

• Slew Rate: ≥ 20 V/μs

• Dynamic Range: ≥ 103 dB

Inputs

• Input Type: Balanced (XLR / 3-pin Phoenix) & Unbalanced (RCA / TRS)

• Input Impedance: ≥ 20 kΩ (balanced), ≥ 10 kΩ (unbalanced)

• Input Sensitivity: +4 dBu (adjustable)

• Gain Control: Front-panel rotary pots or digital control

Outputs

• Output Connectors: 5-way Binding Posts or Phoenix Euroblock Connectors

• Load Impedance: Stable down to 4 Ω

• Bridging Capability: Switch-selectable Bridged Mono mode

Protection

• Protection Circuits: Over-current, Over-temperature, DC fault, Short-circuit, Clip Limiting, Under-voltage

• Power-On Sequence: Muted start-up with inrush current limiting

• Thermal Management: Auto shut-down at critical temperature

Indicators

• Front Panel Indicators: Power LED, Signal Present, Clip/Limiter, Protect, Over-Temp

• Standby Mode: Auto standby after 25 min inactivity; resume < 1 sec

Power Supply

• Type: Switch-Mode Power Supply (SMPS), Universal

• Operating Voltage: 100 – 240 V AC, 50/60 Hz

• Power Consumption: < 15 W (idle), < 1 W (standby), ~420 W (max load)

Mechanical

• Cooling: Convection cooled, fanless, ventless chassis

• Form Factor: 1U Half-rack (rack-mountable with brackets)

• Dimensions (W × H × D): ~220 × 44 × 250 mm

• Weight: ~4.7 kg

• Mounting Options: Desktop, Under-table, Rackmount (1U half-rack, optional 19" rack kit)

• Compact Professional Design – High-performance Class-D amplification in a space-saving 1U rack chassis, engineered for seamless integration into modern AV systems.

• Scalable Options – Available in 2-channel and 4-channel models with selectable power supply capacities, ensuring adaptability across diverse applications.

• State-of-the-Art DSP – Integrated DSP delivers precise system tuning, comprehensive protection, and performance optimization.

• Flexible Connectivity – Multiple analog input options on all models; 2-channel versions additionally feature line-level outputs.

• Audio Networking –

  • A+ Models: AES67 audio networking support.

  • AD Models: Dual-protocol AES67 and Dante™ compatibility, powered by an integrated Gigabit Ethernet switch with daisy-chain capability for seamless audio networking.

• Discreet Installation – Compact sealed versions certified for hidden placements, including ceiling mounts and in-wall enclosures.

• Versatile Mounting – Supplied hardware supports mounting one or two units in a 19” rack, a single unit in an 11” rack, or direct mounting on walls, ceilings, or under tables. Rubber feet included for shelf placement.

• Auto Setup Function – One-touch configuration automatically calibrates gain, limiters, and high-pass filters to match connected loudspeakers, ensuring optimal performance with minimal effort.

• Power Sharing Technology – Intelligent channel headroom sharing allows up to the full rated output of the power supply in 320W models, and proportionally higher delivery in the 600W series.

• Applications – Perfect for conference rooms, training centers, classrooms, and distributed audio systems. Delivers professional sound reinforcement with energy efficiency, flexibility, and long-term reliability.