The JOYO JF-331 F.O.H is a bass DI box pedal built in a mini enclosure. A DI box takes the signal from your bass and sends it direct into a mixer or sound card, which is how most players get their bass to a mixing desk without a microphone on an amp. JOYO describes the F.O.H as "probably the smallest BASS DI Box you've ever seen", and it can run your bass signal direct into a mixer or sound card with a TRS balanced or unbalanced connection1.
What it does for a bass player
The F.O.H is aimed at the player who needs to get a bass signal to the front of house without hauling a full DI unit. JOYO says it can be used to run your bass signal direct into a mixer or sound card with a TRS balanced or unbalanced connection, so it works both feeding a desk over a balanced line and plugging into an interface at home1.
It also carries a three-band EQ section. JOYO describes the purpose plainly: "With the three band EQ section you have tonal control to adjust to the venue and give the mix engineer the signal he nee[ds]". In practice that means you can trim the low end for a boomy room, add presence for a bright one, or shape the signal before it reaches the sound engineer, all from the pedal1.
Specifications
| Specification | Value |
|---|---|
| Input impedance | 1M Ohm1 |
| Output impedance | 100 Ohm1 |
| Power | DC 9V adapter1 |
| Running current | 18mA1 |
| Dimensions | 73(L) x 43(W) x 50(H) mm1 |
| Weight | 220 g1 |
JOYO's product page lists the power requirement as a DC 9V adapter, with a running current of 18mA. The page does not list a battery option, so plan on adapter or pedalboard power.
Where it sits in JOYO's bass range
The F.O.H is one of several bass-oriented pedals in JOYO's lineup. If you want tone shaping beyond a DI, the range includes the Joyo Tidal Wave Preamp, the Joyo Scylla compressor, the Joyo Double Thruster distortion, and the JOYO JF-332 MOONBASE. For a broader look at what is available for bass, see the Bass Pedals page, or the Preamp Pedals and Equalization Pedals pages for related effect types.
Videos
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Questions
What power supply does the JOYO JF-331 F.O.H need?
The JF-331 F.O.H runs on a DC 9V adapter, according to JOYO's product page. JOYO lists the running current at 18mA, which is a light draw that most standard pedalboard power supplies can handle. The page does not list a battery option, so plan to power it from an adapter or a powered pedalboard supply.
Does the JF-331 have a balanced TRS output?
Yes. JOYO describes the F.O.H as a pedal that can run your bass signal direct into a mixer or sound card with a TRS balanced or unbalanced connection. That means you can send a balanced line to the mixing desk for a clean signal over long cable runs, or use it unbalanced where that suits the setup.
How big and how heavy is the JF-331?
JOYO lists the JF-331 F.O.H at 73mm long, 43mm wide and 50mm high, weighing 220g. It is a mini pedal, and JOYO calls it probably the smallest bass DI box you have ever seen, so it takes up little room on a pedalboard and adds very little weight.
What is the input impedance of the JF-331?
JOYO lists the input impedance at 1M Ohm, with an output impedance of 100 Ohm. A 1M Ohm input is high enough that a passive bass pickup sees little loading, which helps preserve the natural tone of the instrument going into the DI.
Sources (1)
- JF-331 F.O.H_JOYO, JOYO
