Fryette ZMACS 4X4 Impedance Matching Amp & Cab Selector

If you’re juggling multiple amps and cabs and want total freedom without the fear factor, the Fryette ZMACS 4x4 is an absolute game‑changer. This clever rack-mountable box lets you switch safely between up to four amplifiers, four cabinets and even two attenuators, all while keeping your precious valve heads properly looked after.

Thanks to its built‑in high‑fidelity impedance matching transformer and internal safety loads on unused amp outputs, you can experiment confidently, knowing everything’s protected and sounding spot on.

Studio‑grade switching, built for the real world

Under the hood, the ZMACS is all about pro‑level performance with zero fuss. It handles up to 100 watts of continuous power, offers fully programmable amp and cab impedance selection from 2/4, 8 or 16 ohms, plus it maintains a 100% analogue signal path throughout.

Silent switching means no pops, clicks or dropouts mid‑take or mid‑set, while transformer‑isolated sends eliminate pesky ground loops. Whether you’re running long cable runs, switching cabs simultaneously or integrating attenuators, the tone remains pure and consistent.

MIDI muscle with plug‑and‑play simplicity

Despite its serious routing power, the ZMACS remains easy to use. It’s fully MIDI programmable with last‑used preset memory, it has a QuickSwitch mode for simple setups and there’s even a remote control port for Fryette Power Station PS‑100 integration.

Front and rear instrument inputs, passive and active options, plus a Link Out for expanding your rig make this a dependable hub for complex systems. Simply put, it’s the kind of behind‑the‑scenes hero that lets you focus on playing, not patching!

About Fryette Amplification

Fryette Amplification is all about no‑nonsense, tour‑grade gear — from valve amp heads and power amps to speaker cabinets, load boxes and attenuators. Built for serious players, Fryette kit is renowned for rock‑solid reliability and uncompromising tone. Famous users include Dean DeLeo (Stone Temple Pilots), Stephen Carpenter (Deftones), Page Hamilton (Helmet) and Rob Caggiano (Volbeat)… not bad company to be in!

• One box, total rig control: Seamlessly switch between up to four amps, four cabs and two attenuators without breaking a sweat (or your gear).
• Go big or go wide: Run two cabinets at the same time for huge stereo spreads or blended speaker flavours.
• Built to handle the heat: Safely copes with up to 100 watts of continuous power, complete with internal safety loads to protect idle amp outputs.
• Pro‑level switching made easy: Fully MIDI‑ready, whisper‑quiet in operation and lightning‑fast, whether you’re recalling presets or keeping it simple with QuickSwitch mode.

General

• Allows switching between any of 4 amplifiers, 4 cabs and 2 attenuators
• Allows selection of 2 cabs simultaneously
• Safely handles 100 watts of continuous amplifier power
• Built-in high-fidelity audio grade impedance matching transformer
• Selectable amp impedance: 2/4, 8 and 16 Ohms (programmable)
• Selectable cabinet impedance: 2/4, 8 and 16 Ohms (programmable)
• Safety internal load for each unused amplifier output
• Switched and unswitched attenuator loops
• Front and rear panel instrument inputs
• Passive and active (buffered) instrument inputs
• Link Out for ganging multiple switching units
• Fully MIDI programmable and simple to operate
• Last used preset memory
• Long cable load transfer
• Silent switching in all modes with no dropouts, pops or clicks
• Transformer isolated amplifier input sends eliminate annoying ground loop issues.
• Remote switching control port controls Power Station PS-100 channel and loop select functions.
• QuickSwitch mode allows simple preset selection when MIDI is not required.
• 100% analogue signal path

Dimensions & weight

• Dimensions: 19” x 1.75” x 9” (48 x 4.4 x 23 cm)
• Weight: 12 lb. (5.5 kg)