Acoustic Image Double Bass Amp – Clarus S4Plus

$1,099.00 $979.00


Acoustic Image Clarus S4 Plus amp head is known for it’s clean yet powerful sound.  Super compact and lightweight, this amplifier  continues to raise the bar in high fidelity sound. FREE USA SHIPPING!


Acoustic Image Double Bass Amp

Clarus S4Plus: Two musical channels + effects + 600 watts.

Model: 601 IA Plus
Clarus S4Plus: Clarus S4plus 2 ch 600W Intergrated Amp w/Effects

The Clarus S4Plus is just the amp head and can be combined with almost any modern speaker combo. Every Acoustic Image design is engineered to accurately reproduce the sound of acoustic and electric instruments. Acoustic Image amps combine purity, power, and portability in a package that sets a new standard in high fidelity amplification.


  • Extended frequency range, high fidelity sound
  • Light weight (<4 lbs.), small size (10.2 x 8.2 x 3.5)
  • Unique, slanted front chassis
  • Mounts in cabinet using Cabrio Docking System
  • Separate XLR and 1/4 inch inputs in each channel can be used simultaneously
  • 48V phantom power and 10 dB gain select for mic input
  • Input level control per channel
  • Four band EQ per channel
  • Selectable phase reverse and sweepable low cut filter per channel (phase reverse can be converted to low pass speaker emulation filter with internal jumper option)
  • Effects loop per channel
  • Selectable reverb and delay effects with level and rate controls and pseudo stereo output
  • Direct out with selectable 10 dB pad, pre/post switch and ground lift-Headphone output
  • Switchable limiter
  • Mute switch
  • Mono or stereo output from the preamp section Selectable internal jumper options for gain and stereo operation
  • High fidelity, low noise operation: 110 dB SNR at direct out
  • Automatic voltage switching for universal AC mains operation
  • 650 Watt output at 4 ohms (music power)
  • Dual speaker outputs with speakon connectors
  • Comes with padded case

All AI amps are ordered when you order and typically have a 2 to 4 week lead time.  AI assembles all amps by hand and we’ve found that ordering them as we need them makes sure the most current product ships out to you!


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