Diamond Audio DES500.1D DES Series 1-Channel Monoblock Full Range Class D Car Amplifier

Diamond Audio DES500.1D

The Diamond Audio DES Series 1-Channel Monoblock Class D Amplifier, engineered for premium car audio systems that demand precision, power, and efficiency. As part of the flagship Diamond Elite DES Series, this amplifier is designed from the ground up to deliver dynamic sound performance and optimal power at multiple impedance levels.

Built with advanced Class D digital amplifier technology, the Diamond Audio DES monoblock amplifier delivers 400W RMS at 4 ohms, 500W RMS at 2 ohms, and 500W RMS at 1 ohm, providing strong, consistent output for subwoofers in a wide range of system configurations. Its efficient design minimizes heat while maximizing output, ensuring reliable performance during extended listening sessions.

Engineered with the latest digital chipset and full PWM power supply, this high-performance monoblock amplifier offers excellent signal accuracy with low distortion (0.05% THD) and an impressive signal-to-noise ratio up to -98.9dBA, delivering clean, distortion-free bass reproduction.

Fine-tune your subwoofer system with a variable low-pass crossover (35Hz–350Hz), allowing precise control over low-frequency output. The Diamond Audio DES amplifier also features balanced differential inputs for noise-free signal transmission and a high damping factor (>250) for improved subwoofer control and tighter bass response.

Features

• 1-Channel Monoblock Class D Amplifier
• 400W @ 4Ω / 500W @ 2Ω / 500W @ 1Ω RMS Power
• Diamond Elite DES Series Flagship Performance
• Advanced Digital Chipset with Full PWM Power Supply
• Variable Low-Pass Crossover (35Hz – 350Hz)
• VOX / DC / REM Auto Turn-on Options
• Balanced Differential Inputs for Clean Signal
• High Damping Factor for Tight, Controlled Bass
• Compact, Premium Design for Easy Installation

Specifications

1-Channel Elite DES Series Monoblock Class-D Digital Amplifier

Power Rating

• RMS Power (1Ω) : 500 Watt x 1 Channel
• RMS Power (2Ω) : 500 Watt x 1 Channel
• RMS Power (4Ω) : 400 Watt x 1 Channel

Power Supply

• Power Supply : Full PWM
• Power Supply Threshold : 10.0VDC - 17.0VDC
• Idle Current: 0.7A

Distortion

• THD 4 (1KHz @ 4Ω) : 0.5%
• S/N Ratio (A Weighted @ 1W) : -77.2dBA
• S/N Ratio (A Weighted @ FP) : -98.9dBA

Input Sensitivity

• Low Input Level : 200mV - 10V
• High Input Level : Up to 25W RMS

Input Impedance

• Low Input Level : 22KΩ
• High Input Level : 22KΩ

Output Stage

• Output Impedance : 0.047Ω
• Damping Factor (50Hz @ 4Ω) : >250
• Bandwidth (-3dB) : 10Hz-350Hz

Crossover (-12dB/Oct)

• Variable High-Pass : N/A
• Variable Low-Pass : 35Hz - 350Hz
• Variable Sub-Sonic : N/A

Fuse Ratings

• ATC : 3 x 40A

Dimensions

• L x W x H : 11.81" x 7.25" x 2.0" (299.9 x 184.2 x 50.8)mm