DLS Signature S1 24V, mono Class D audio amplifier

A really great amp doesn't make any sound. The Signature Series features unsurpassed low distortion and extremely high signal-to-noise ratio, now 24V!

The Next Evolution of DLS: Signature Series Amplifiers

In 2019, DLS celebrated 40 years of delivering exactly what audio enthusiasts craved, but we knew we could push the boundaries even further. In collaboration with Gordon Taylor, we embarked on a journey to craft perfection in sound.

Silence is Golden
A great amplifier is defined by its silence—no noise, just pure music. The Signature series achieves this with incredibly low distortion and an exceptionally high signal-to-noise ratio. This lets you hear only the music, revealing new details with warm clarity and delivering firm, authoritative mid-bass.

Optimized for Perfection
Every element of the Signature series amplifiers has been meticulously fine-tuned, from the custom cooling system to the power supply. Each channel is individually calibrated, and all components are synchronized to perform in perfect harmony. When paired with a Digital Sound Processor (DSP), there's an option to bypass the preamp circuitry, allowing the DSP to handle all sound tuning. This ensures a clean, unaltered signal reaches the amplifying stage without any sonic degradation, delivering a pure and perfect listening experience.

With the Signature series, music is presented in its truest, most unaltered form, achieving the pinnacle of sound quality.

Damping Factor
Greater than 150

Total Harmonic Distortion (THD)

At 3W, 20Hz-300Hz: Less than 0.06%

At 400W, 100Hz: Less than 0.09%

Signal-to-Noise Ratio (S/N)
94 dB, A-weighted

Input Sensitivity
1 - 4 Volts

Input Impedance

Low Level: 22 kohm

High Level: 3.3 ohm

Power Consumption

Idle: 0.6 A

Maximum: 51 A

Bass Boost
At 45 Hz: 0 to +6 dB

Subsonic Filter
30Hz ON/OFF

Phase Switch
0/180°

Remote Control
Sub level control with 5m cable

Cooling
Internal cooling fan

User manual (EN)