AMT Electronics AMT EX-10F-II

The AMT EX-10F-II is an expression pedal from AMT Electronics, and the successor to the company's AMT EX-50 expression pedal. Compared with its predecessor, AMT says the range of pedal movement is increased by 25 to 30 percent, which gives your foot a longer sweep over the same control range. The pedal is listed as AVAILABLE NOW on the maker's product page¹.

What it does

As an expression pedal, the EX-10F-II sends a control signal to an external device, sweeping a parameter such as volume, delay time or effect level as you rock the pedal. At its heart is a 10 kOhm potentiometer, the same value the maker specifies for the earlier EX-50¹³. AMT describes the pedal as built on "a reliable proven circuit, a durable metal case, as well as small dimensions make the novelty an indispensable accessory"¹.

Controlling two devices at once

Where the EX-10F-II differs most from a basic expression pedal is in its connections and switching. When used in expression pedal mode, it carries on-board TRS and TS outputs for controlling two devices simultaneously¹. The F.SWITCH M/L OUTPUT accepts one of two cable types, depending on the switching of the external device:

• a TRS (stereo) 6.3 mm jack cable, or
• a TS (mono) 6.3 mm jack cable¹

A switch on the side panel selects one of two operating modes: Momentary footswitch (M) or Latch footswitch (L)¹. The pedal also provides an INVERTED and NORMAL parameter switch, which reverses or restores the direction of the pedal's sweep to suit devices that read the expression signal the opposite way¹.

Built-in tone functions

Alongside its expression and footswitch duties, AMT's media center page lists a set of tone functions on the EX-10F-II²:

• Analog Preamp with Clean / Low gain / High gain modes
• Power Amp with 9 types
• IR cabsim, with 1 IR for both L/R channels per preset
• Compressor
• Noise Gate, as a global setting
• Parametric Pre/Post EQ⁴⁵

In plain terms, that means the pedal can act as more than a controller: the analog preamp shapes the gain stage, the power amp and IR cabinet simulation models the back end of an amp, and the compressor, noise gate and parametric EQ sit before or after that stage. Players looking at this side of the pedal may also want to read about preamp pedals, compressor pedals and noise gate pedals as separate building blocks².

Power, size and documentation

The device can be powered from any AC/DC power supply in the voltage range from 9 to 18 volts, according to AMT Electronics¹. The case measures 55 x 62 x 110 mm, so it sits in the compact range for a pedal of this kind, and it is built in a strong metal body¹.

Compared with the AMT EX-50

The EX-10F-II's predecessor, the AMT EX-50, uses the same 10 kOhm potentiometer value³¹. The EX-10F-II adds the increased 25 to 30 percent pedal travel, the dual TRS and TS outputs for two devices, the momentary/latch and inverted/normal switches, and the built-in preamp, cabinet simulation and dynamics functions¹². For a player choosing between them, the EX-10F-II is the fuller-featured unit, while the EX-50 remains the simpler controller.

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