Ram Audio S 3004

Compact 2 and 4-channel Power Amplifiers with state-of-the-art QuantaPulse EVO SMPS

The state-of-the-art QuantaPulse EVO switched-mode power supply of the new S Series amplifiers provides major benefits: it increases efficiency and reliability, generates less heat and keeps the weight down. While delivering high output power S series amplifiers tip the scales at around 8 kg only.

S Series power amplifiers are available with 2 and 4 channels and output ratings from 1.5 to 6 kW. Housed in 30 cm deep, 2U rackmountable chassis the S series uses surface-mount technology with high component density for maximum reliability.

Main Features

  • QuantaPulse™ EVO switched-mode power supply for maximum efficiency, increased output and reliability
  • five 2-channel models with up to 4 kW output power
  • very light weight (8 kg), 2U and 30 cm depth
  • electronic protection circuits
  • high component density surface-mount technology (SMT) provides mechanical strength and reliable operation
  • Neutrik XLR and Speakon connectors

QuantaPulse™ Technology: The Soft Switching Resonant QuantaPulse Power Supply is designed to provide plenty of power when needed monitoring the necessary parameters of voltage and current for a controlled performance at all times. Bi-directional data flow between the power supply and power amp module. Two very important characteristics of the QuantaPulse power supply are the optimization against over-voltages and superior reliability.



PA Power Amplifier 4 x 700 W 2 Ohms

Product type
Power Amplifiers

PA Power Amplifiers

Rated ouput power (1kHz @ 2 Ohms)
4 x 700 W

Rated ouput power (1kHz @ 4 Ohms)
4 x 500 W

Rated ouput power (1kHz @ 8 Ohms)
4 x 300 W

Rated ouput power (1kHz @ 4 Ohms, bridged)
2 x 1400 W

Rated ouput power (1kHz @ 8 Ohms, bridged)
2 x 1000 W

High Z 100Vrms / 140Vpeak
2 x 1100 W

Output circuitry
Class H

Frequency response
20 – 20000 Hz

Total Harmonic Distortion (THD)
< 0.05 %

Signal-to-noise ratio
112 dB

Damping factor
> 500

> 75 dB

26 / 32 / 38 dB

Input sensitivity
2.6 / 1.3 / 0.6 V

Input impedance
(balanced) 20 k Ohm(s) , (unbalanced) 10 k Ohm(s)

Protection circuits
DC voltage , high frequency , mismatching , on/off transients , open outputs , power on muting , short circuit , Soft start , thermal overload

2 x volume , dual/bridge switch , Power

Clipping , fault , ready , signal , temperature

Line inputs

Line input connectors

Loudspeaker outputs

Speaker output connections


Operating voltage
230 V

Power consumption @ full load
6 A

483 mm

89 mm

310 mm

8,5 kg


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