Samson S4000 - 2x500W @ 4Ω, 20-channel self-powered mixer with USB player/recorder

Samson S4000 - 2x500W @ 4Ω, 20-channel self-powered mixer with USB player/recorder

The Samson S4000 is a self-powered mixing console designed for live sound applications that integrates two 500 W at 4 Ω power amplifiers (1,000 W total) and a complete 20-channel mixer (12 mono + 4 stereo). It includes a USB MP3 player/recorder to play music or save the mix to a flash drive, two 24-bit effects processors with 100 presets and 9-band graphic EQ on both the main and monitor outputs. Each mono channel offers a low-noise mic preamp , a 75 Hz “Low Cut” filter , a three-band EQ with semi-parametric midrange (100 Hz–8 kHz) , PFL and Mute , providing fine control and fast operation on any stage.

In terms of routing, the S4000 features 4 AUX sends (1 Pre, 1 Pre/Post, 2 EFX), a Mono/Sub output with variable 20–200 Hz low-pass filter , MAIN OUT and MAIN OUT 2 outputs , AUX 1/2 outputs , EFX OUT 1/2 , TRS inserts per channel (1–12), and Speakon and 1/4” jack speaker connections per stage. It includes switchable +48 V phantom power for channels 1–12, 11-segment LED meters , a headphone output , and a zippered hard case for transport and storage.

Main features

• Integrated power : 2×500 W at 4 Ω (1,000 W total) with THD 0.1% at 1 kHz.
• 20 channels : 12 mono with microphone preamps + 4 stereo channels.
• Processing : Dual 24-bit FX with 100 presets and send/return controls.
• EQ per channel : HF ±15 dB (12 kHz), MF ±15 dB with 100 Hz–8 kHz sweep, LF ±15 dB (80 Hz); Low Cut 75 Hz on mono channels.
• Graphic EQ : 9 bands (63, 125, 250, 500, 1k, 2k, 4k, 8k, 16k) on Main L/R and Monitor .
• USB Player/Recorder : MP3 via flash memory for playback or recording of the mix.
• 4 Aux : 1 Pre, 1 switchable Pre/Post, 2 EFX.
• Outputs : MAIN OUT, MAIN OUT 2, MONO/SUB with LPF 20–200 Hz , AUX 1/2, EFX 1/2, Speakon + jack per stage, 6.35 mm headphones .
• Input connectivity : XLR/jack per mono channel with TRS insert ; stereo inputs on 6.35 mm jack and RCA ; CD/TAPE In and Record Out on RCA.
• Mixing tools : PFL per channel, AFL on Main/Mono, Mute per channel, 11-segment LED meters.
• Phantom power : +48 V switchable for channels 1–12.
• Construction and accessories : Steel chassis and protective cover with fasteners included.

Product benefits

• Less equipment, more control : console + stage + FX + player/recorder in a single unit, reducing wiring and setup times.
• Clear, powerful mixes : low-noise mic preamps, precise equalization, and 1,000W to drive passive systems with ease.
• Flexible Routing : 4 Aux Sends, Dual Main Outputs, and Mono/Sub Output with Variable Crossover for Subwoofer Systems.
• Professional operation : PFL/AFL, LED meters and inserts per channel for external processing when necessary.
• Tour Ready : Hard case included and Speakon connectors for secure speaker connection.

Use cases

• Events and live performances in theaters, auditoriums, bands, and orchestras with passive L/R + subwoofer systems.
• Fixed installations in multipurpose rooms, cultural centers, and educational centers that require ease of use and power.
• Mobile production for rental companies and integrators looking for a robust all-in-one solution.

Frequently Asked Questions

• Can I record the mix to a USB? Yes, the built-in MP3 player/recorder allows you to record the mix to a USB flash drive.
• Does it have phantom power? Yes, +48 V switchable for channels 1–12 for using condenser microphones.
• What is the minimum load impedance? 4 Ω per stage (L and R). It is possible to connect two 8 Ω speakers per side.
• Can I use an active subwoofer? Yes, via the Mono/Sub output with a variable 20–200 Hz low-pass filter .

Description for projects

20-channel self-powered mixer (12 mono + 4 stereo) with 2×500 W/4 Ω (THD 0.1% at 1 kHz). Dual 24-bit FX/100 presets . EQ per channel: HF 12 kHz ±15 dB, swept MF 100 Hz–8 kHz ±15 dB, LF 80 Hz ±15 dB (Low Cut 75 Hz in mono). 9-band graphic EQ (63–16 kHz) on Main L/R and Monitor. 4 Aux (1 Pre, 1 Pre/Post, 2 EFX). Inputs : XLR/Jack per mono channel with TRS inserts ; stereo 6.35 mm jack and RCA; CD/TAPE In and Record Out RCA. Outputs : MAIN OUT, MAIN OUT 2, MONO/SUB with LPF 20–200 Hz, AUX 1/2, EFX 1/2, Speakon + jack per amp, PHONES 6.35 mm . Phantom +48 V (ch. 1–12), PFL/AFL , 11-segment LED meters. Dimensions (without cover): 622 × 159 × 533 mm. Weight : 23.5 kg. Max. consumption : 2,100 W. Includes protective cover.