The One Control Xenagama Tail Loop MKIII is a loop switcher with a tuner out and a built-in BJF buffer, made by One Control. It gives a player three footswitchable effect loops, a dedicated tuner output, and buffering in one small unit, so pedals that would otherwise load down the signal can be kept out of the path until needed. As of 26 October 2026 it is listed as sold out on the maker's US store1.
Loops, tuner out and mute
The MKIII has three effect loops, and One Control states that all the switches on the MKIII are true bypass loops. The maker's stated reason is that vintage pedals and other effects can change your tone when they are switched on but sitting idle, and true bypass loops keep them out of the signal path entirely until you bring them in1.
The tuner out is a separate jack, and the Tuner switch on the right side of the unit sends the signal to it. One Control notes that if you do not have a tuner connected, that same switch works as a mute switch, which the maker describes as helpful for silent changes1.
The BJF buffer
The unit carries a BJF buffer, the circuit One Control uses across its utility range, including the Minimal Series BJF Buffer and the LX Tuner with BJF Buffer. With the buffer engaged, the MKIII presents an input impedance of 500kΩ and an output impedance of 60Ω, figures the maker publishes for the unit1. A high input impedance is gentle on passive pickups, and a low output impedance helps the signal drive the rest of the chain.
Size and power
One Control makes a point of the MKIII's footprint: with a depth of only 41mm, the maker calls it one of the world's smallest loop switching systems1.
| Specification | Value |
|---|---|
| Dimensions (excluding protrusions) | 244W x 37D x 32H mm |
| Dimensions (including protrusions) | 244W x 41D x 46H mm |
| Depth | 41mm |
| Weight | Approx. 310g |
| DC out | 4 (branch from the power terminal) |
The four DC outputs branch from the power terminal, so the unit can feed power to other pedals on the board1.
The MKIII was listed as sold out on One Control's US store as of 26 October 20261.
Price
One Control lists the Xenagama Tail Loop MKIII at a regular price of $209.00 USD, with a sale price shown at $261.99 USD on the same page as of 26 October 20261.
Videos
One Control
Questions
How many effect loops does the One Control Xenagama Tail Loop MKIII have?
The Xenagama Tail Loop MKIII has three effect loops. Each of the footswitches on the unit is a true bypass loop, so pedals placed in the loops are taken completely out of the signal path when switched off. That matters for vintage fuzzes and other pedals that change your tone when they are not in use, which is the situation the maker says the design addresses.
Are the Xenagama Tail Loop's loops true bypass?
Yes. One Control states that all the switches on the MKIII are true bypass loops. The maker's reasoning is that vintage pedals and other effects can alter your tone when they are switched on but left out of the loop, and true bypass loops keep them fully out of the signal path until you call them up.
Can the tuner switch mute the signal?
Yes. The Tuner switch on the right side sends the signal to the tuner out, and if you do not have a tuner connected, One Control says that same switch can be used as a mute switch. That is handy for silent tuning or for cutting the signal between songs without needing a separate kill switch on the board.
What are the input and output impedances of the Xenagama Tail Loop MKIII?
With the buffer on, the MKIII has an input impedance of 500kΩ and an output impedance of 60Ω, according to One Control. A high input impedance keeps the pickup's natural tone intact, and a low output impedance helps the signal drive long cable runs and downstream pedals without losing top end.
How many DC outputs does the Xenagama Tail Loop MKIII have?
The MKIII has four DC outputs, branched from its power terminal. That lets the unit share power with other pedals on the board rather than needing a dedicated output for itself alone.
Sources (1)
- Xenagama Tail Loop MKIII, One Control USA
