Rebec A1200D Mono Class D Subwoofer Amplifier

Product Overview

The Rebec A1200D is a high-power mono Class D amplifier developed for dedicated subwoofer applications. Positioned above the D600 and D1200 within the Rebec amplifier lineup, the A1200D combines substantial output capability with advanced low-frequency control features and enhanced system integration flexibility.

Delivering up to 1200W RMS at 1Ω, the A1200D is designed to support demanding subwoofer systems while maintaining efficient Class D operation and a compact installation footprint. As a member of the Rebec A Series, it represents a higher-level solution for users seeking greater low-frequency performance and system flexibility.

Key Features

• Mono Class D amplifier design

• 450W × 1 RMS @ 4Ω

• 738W × 1 RMS @ 2Ω

• 1200W × 1 RMS @ 1Ω

• Frequency response from 10Hz to 150Hz

• Signal-to-noise ratio >95dB

• THD+N ≤0.05% (100Hz)

• Adjustable Subsonic Filter (10Hz–50Hz)

• Adjustable Low Pass Filter (50Hz–150Hz)

• Variable Bass Boost (0–12dB)

• 2-channel low-level link output

Design and Engineering

The A1200D utilizes a Class D amplifier architecture with a power transistor output stage. The design focuses on delivering high output capability while maintaining operational efficiency and installation practicality.

The amplifier operates within a voltage range of 10V to 16V and accepts low-level input signals from 0.3V to 6V, allowing compatibility with a broad range of source units and digital signal processors.

Compared with the D-Series amplifiers, the A1200D incorporates a low-level link output, allowing signal distribution to additional amplifiers when system expansion is required. This feature provides greater flexibility for more advanced audio installations.

The amplifier also includes adjustable subsonic and low-pass filters, together with a variable bass boost function, enabling precise low-frequency tuning according to subwoofer characteristics and enclosure design.

Power Delivery

The A1200D provides substantial power output across a wide range of load conditions.

At 4Ω, the amplifier delivers 450W RMS, increasing to 738W RMS at 2Ω and reaching 1200W RMS at 1Ω. This output capability allows the amplifier to support a wide variety of passive subwoofers, from compact low-frequency systems to larger high-performance subwoofer installations.

The amplifier’s power platform is designed to provide stable low-frequency reproduction while maintaining consistent performance during demanding listening conditions.

Sound Performance

The A1200D is designed as a high-power single-channel bass amplifier with a sound character that combines strong low-frequency output with a loose and elastic tonal presentation.

Its low-frequency reproduction emphasizes bass energy and extension while maintaining a natural sense of movement and flexibility. The amplifier is capable of delivering substantial low-frequency support across a wide range of musical styles, helping to reinforce the foundation of the audio system.

With a frequency response extending down to 10Hz and dedicated subwoofer controls, the A1200D is designed to reproduce deep bass content while maintaining good low-frequency integration within the overall system.

Product Positioning

Within the Rebec mono amplifier lineup, the A1200D occupies a higher position than the D600 and D1200.

While sharing a similar maximum RMS output rating with the D1200, the A1200D belongs to the higher-level A Series platform and offers additional system integration capability through its low-level link output. This allows the amplifier to support more advanced system architectures while maintaining dedicated low-frequency amplification performance.

The A1200D is intended for users seeking a high-output mono amplifier with flexible tuning capability and expanded installation possibilities.

Design Philosophy

The A1200D was developed to provide a combination of high output capability, low-frequency control, and installation flexibility.

By combining a dedicated Class D subwoofer platform with advanced tuning features and system expansion capability, the amplifier is designed to serve as a powerful foundation for demanding low-frequency applications within the Rebec ecosystem.

Rebec A1200D

Higher-Level Mono Performance. Flexible System Integration. Powerful Low-Frequency Control.