ACS 4×4 - Amplifier Cabinet Switcher

ACS 4×4 - Amplifier Cabinet Switcher

CHF 899.00

The KHE ACS 4x4 enables to switch between 4 guitar amps and 4 speaker cabinets or load boxes. Switch between any combination of amps and cabs instantly with a single push of a switch. No more moving heads around or plugging cables. Instant a/b testing and amp shootouts!

◾ Features: Attenuator Insert Loop, Dual-Cab Mode, MIDI Control
◾ Multiple units can be linked to expand the switching options
◾ One amp and up to two cabs can be active at time
◾ Compatible with heads, combos, tube- and solid state amps
◾ Amps are fully protected by load resistors and advanced safety functions
◾ No hum or noise, and no clicks or pops while switching!
◾ Steel enclosure in 19" one unit rack space (20cm depth)
◾ Power supply included
◾ Professional amp switcher, built in Switzerland
◾ 30 day money-back guarantee

Scroll down for detailed info on the KHE ACS 4x4!


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CHF 899.00

Excl. shipping, import taxes and VAT. Import duties may apply on import. Payment in CHF (Swiss Francs) by PayPal or Credit Card. Worldwide shipping out of Switzerland. UPS Express delivery option available.

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KHE Audio | ACS 4x4

4x4 Switching System for Guitar Amplifiers, Speaker Cabinets and Load Boxes
with Attenuator Insert Loop, Dual-Cab Mode and MIDI control

The KHE ACS is the most advanced guitar amp switcher on the market:

✔ switch between any combination of guitar amps and cabs instantly, by the push of a button
✔ switch between speaker cabinets and load boxes for silent recording
✔ run pedals like boosts, overdrives, distortion and fuzzes in front of all amps
✔ use a single power attenuator across all amps
✔ full MIDI control

✔ switch while you play - no need to put amps into standby or stop playing!
✔ works with tube & solid-state amps, speaker cabinets & load boxes, heads & combos
✔ 100% safe for tube amps: no amp can be activated without a load, amps are protected by a load resistor
✔ modular system, multiple switchers can be linked together to expand switching capabilities

FEATURES ACS 4x4

  • Amp and Cab Switching – instantly switch between 4 amps and 4 cabs. No need to put your tube amps into standby or stop playing!

  • Attenuator Insert – attenuate the volume of all amps by inserting a global power attenuator into the post-amplifier pre-speaker insert loop (like Waza TAE, OX Top Box, Two Notes etc).

  • Dual-Cab Mode - activate and play two speaker cabinets or load boxes in parallel at the same time

  • Midi Remote Control - manage your entire amp collection at your footstep by using MIDI footswitch to control the ACS

  • Link Mode - multiple switchers can be linked together to expand switching capabilities. Mix and Match the different models, and grow your switching system with your needs! 4x2, 4x4, 8x4, 8x1, 8x8, 12x4, 16x4, 16x8 ... everything is possible!

  • Tuner Output

  • Front & Rear Guitar Input

  • Gound Lift

WIRING DIAGRAM

 
 

TECHNOLOGY

Inside the ACS, a digitally controlled relay matrix switches between all amps and cabs. The switching procedure is timed and controlled by a microcontroller for fast, precise and reliable switching. A special mute circuit removes any clicks and pops during switching -the switching process is more silent than most amp’s channel switching! Advanced shielding techniques are used inside the ACS to shield the sensitive input lines from the powerful output lines.

COMPATIBILITY

The KHE ACS is compatible with all types of amplifiers and load devices, such as tube amps, solid-state amps, speaker cabinets, load boxes and power attenuators, up to 150 watts per channel. It works beautifully from sparkling clean sounds to ripping high-gain tones!

SAFETY FEATURES

Load Resistors - All amps are connected to a dummy load resistor to protect the power amps. All unused amps get muted at their inputs, so no signals can reach the power amp.

Load Detection - Cabinet jacks are supervised for a speaker cabinet or load box. If no load is connected, the cabinet outputs are automatically locked and excluded from the switching operation.
This ensures amplifiers can never be activated without a real load connected.

No Cab? No Amp! A clever digital switching logic makes sure no invalid combination is possible: If no load is activated, you can not enable an amplifier.

 
 

SPECIFICATIONS ACS 4x4

Amplifier Switching: 4x (mono, one amp active at the time)
Cabinet & Load Switching: 4x (two cabs can be active at the time)
Load Resistors: YES
Dual-Cab Mode: YES
Attenuator Insert Loop: YES
FX-Loop Switching: NO
MIDI Control: YES
Tuner Output: YES
Modular System: YES
Ground Lift: YES

Switching Element: Relays, analog, sequential switched
Control System: Microcontroller, digital
Power Handling: switches max. 150 Watts per Channel
Amplifier & Speaker Impedance: 1:1 pass-thru, passive

Amp Switching: switches both guitar input and speaker output
Attenuator Insert: serial, passive, Speaker Level
MIDI Control: MIDI Input, 15 Channels, CC & PC Messages

Switching Time: 15ms max.
Contact Resistance: > 0.1 Ohm
Guitar Input Impedance: 2,2 MOhm
Guitar Input Type: active buffered
Guitar Input Level: 15Vpp / +18dBu
Frequency Range: 10-100kz +/-0.2dB

Dimensions: 483 x 200 x 44mm / 19” 1U
Enclosure: 1,5mm Steel
Weight: 3.5kg
Power Supply: 15VDC, 90-240VAC, external type, included
Connectors: colour-coded for easy wiring
Country: Switzerland
Warranty: 2 Years
User Manual: LINK

IMPORTANT NOTES

◾ no amp can be activated if no load is activated!
◾ no stereo amp switching - mono only!
◾ no bi-amping - only one amp active at the time!
◾ no cables included (instrument, speaker or midi)
◾ no built-in load box for silent recording (external load required)
◾ no remote foot controller included

SHIPPING & DELIVERY

◾ Payment: Credit Card or PayPal in CHF (Swiss Francs). For Bank Transfer (IBAN), send us a message.
◾ Stock units are usually shipped within one working day
◾ Shipping from Switzerland (non-EU)
◾ Price excluding VAT. Import charges may apply for the customer on import.
◾ Worldwide shipping!
◾ Shipping: USA + CA: 99 CHF , EU + UK: 48 CHF, others: see checkout
◾ Shipping Delivery Time: USA 2-5 days, EU 5-8 days (UPS Express or UPS Standard)
◾ The shipment is fully covered by insurance. If it's lost or damaged, you'll get a new switcher!

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Send us a message if you have any questions!

PRODUCT LINE UP

The KHE ACS-Series contains 7 amp switcher models with different sizes and switching options: