PedalBro

DI / Amp Sim · Walrus Audio

Walrus Audio MAKO Series: ACS1 MKII

The ACS1 MKII is a DI and amp simulation pedal featuring six amp models paired with cabinet impulse responses, a room reverb effect, and stereo input/output. It offers MIDI support and preset storage via an on-board OLED screen.

  • 9V DC · center −
  • 300 mA
  • Buffered bypass
  • Digital
  • Stereo
  • MIDI
New
from $399.99
Used (asking)
from $379

The rundown

Highlights

  • Six amp models with cabinet impulse responses
  • Room reverb effect built-in
  • Stereo input and output
  • MIDI support for external control
  • Preset-capable with OLED display

Best for

Guitarists seeking a compact amp simulator with stereo capabilities and preset management for direct recording or live DI applications.

Quick facts

Power
9V DC
Current draw
300 mA
Polarity
Center negative
Bypass
Buffered bypass
Dimensions
72.4 × 124.5 mm
Stereo
Yes
MIDI
Yes
Status
In production

Where to buy Walrus Audio MAKO Series: ACS1 MKII

$399.99 lowest new price · Reverb

Used listings asking $379–$379, median $379 (1 listing, small sample). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$379View
ReverbNew$399.99View
ReverbNew$399.99View
ReverbNew$399.99View
ReverbNew$399.99View
ReverbNew$449.99View
ReverbNew$449.99View
ReverbNew$449.99View
ReverbNew$449.99View
ReverbNew$449.99View

Prices last checked 22 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the ACS1 MKII use?

The ACS1 MKII runs on a 9V DC supply drawing 300 mA with a center-negative connector.

Does the ACS1 MKII support MIDI?

Yes, the ACS1 MKII includes MIDI support for preset and parameter control.

What are the dimensions of the ACS1 MKII?

The ACS1 MKII measures 72.4 x 124.5 mm.

Does the ACS1 MKII have stereo outputs?

Yes, the ACS1 MKII features stereo input and output.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.