Yes, a Mackie ProFX12v3 Bluetooth connection takes one XLR or 1/8 inch cable. The XLR inputs accept balanced line level from almost any source, and channels 11/12 add a 1/8 inch stereo pair. One thing to plan around: this mixer has no power amp, so the chain continues to powered speakers or a separate amplifier after the main out.
Figures on this page were checked October 2026. Every table row carries its source.
Spec snapshot
| Item | Value | Notes | Source |
|---|---|---|---|
| Format | Line mixer | No power amp onboard; mains feed powered speakers or an external amp | OM |
| Bluetooth | Not on this model | Manual describes no wireless input | OM |
| Combo inputs | Chs. 1-2 | XLR plus 1/4 inch with Line/Hi-Z switch for direct guitars | OM |
| XLR mic inputs | 7 × Onyx pre | Balanced mic or line level from almost any source, up to 60 dB gain | OM |
| Stereo line inputs | ¼" TRS/TS | For any line-level instrument, effects device or CD player | OM |
| 1/8" stereo pair | Chs. 11/12 | The 12v3's small-source channel | OM |
| Maximum levels | +22 dBu inputs | Main mix XLR out +28 dBu; mic in 3.3 kΩ | OM |
| DSP and USB | GigFX 24 | 24-bit/192 kHz 2x4 USB interface; single-knob compression | OM |
| EQ | 3-band + low cut | 80 Hz / 2.5 kHz / 12 kHz, 18 dB/octave cut at 100 Hz | OM |
| Phantom power | +48 V switch | For condenser mics on the XLR inputs | OM |
Source code: OM = Mackie ProFXv3 Owner's Manual (family manual, 12v3 rows noted, accessed 2026-10-02).
Where to connect
Female XLR inputs
RecommendedThe manual rates these XLRs for balanced mic or line level from almost any type of source, so a Bluetooth receiver with XLR output plugs straight in with no gain staging drama. The Onyx preamps behind them carry up to 60 dB for quiet sources.
1/8" stereo pair (channels 11/12)
Good alternativeA compact receiver with a mini plug lands here, keeping the XLRs free for microphones. The pair exists for exactly this kind of small stereo source, per the manual's channel map for the 12v3.
Amplifier outputs, direct
Not supportedThe manual is blunt about it: an amplifier's output does not belong in an input jack, and the warning says connecting one directly can damage the input circuitry. Speaker-level feeds stay out; the chain runs receiver, mixer, then powered speakers or amp.
Set up in three steps
- Plan the chain
This mixer leaves the amplification to the next box: main XLR out to powered speakers, or to a power amplifier like the RMX1450 for passive cabinets.
- Connect and power
Receiver into an XLR input or the 1/8" pair, phantom on only if a condenser mic needs it, then mains. The USB socket handles recording, not phone audio.
- Level check
Set gain with the level-set LEDs beside each knob, raise the channel and main faders, and let the GigFX engine add a touch of reverb if the room needs it.
Quirks and notes
- A recording interface in the rack (verified): the 2x4 USB stage runs at 24-bit/192 kHz and can return two custom mixes from a computer, so the same desk covers livestreams and sessions.
- Hybrid channels, one gain (verified): channels 5/6 through 9/10 carry a mic input plus a stereo line input, and the gain knob affects the microphone side only, per the manual's channel notes.
- Hi-Z without a DI box (verified): channels 1 and 2's Hi-Z switch optimizes impedance for a direct guitar, while other channels want an external DI box for instruments.
- Compression where it counts (verified): single-knob compressors sit on selected channels for keeping vocals level in live and streaming duty.
What you need
- Bluetooth receiver with XLR output, aptX HD preferred for source quality
- XLR cable, receiver to mixer, or a 1/8 inch stereo cable for channels 11/12
- Powered speakers or a power amplifier for the main outputs
- USB power for the receiver, a phone charger is fine
FAQ
Plug a Bluetooth receiver with XLR output into one of the female XLR inputs, which the manual rates for balanced mic or line level from almost any type of source, then raise the channel fader and main fader. The feed behaves like any wired source.
No. The owner's manual describes no wireless input of any kind. Bluetooth arrives with the receiver you connect to its XLR, 1/4 inch or 1/8 inch inputs.
Powered speakers, or a separate power amplifier feeding passive speakers. The ProFX12v3 is a line mixer without an onboard amplifier, so the main XLR outputs carry the finished mix onward rather than driving speakers directly.
Yes on channels 1 and 2: the manual's Line/Hi-Z switch optimizes input impedance for a direct guitar connection without a DI box. Other channels need an external DI box for instruments.
blafili XLR Bluetooth Audio Receiver
XLR output for balanced inputs, aptX HD, USB powered with a 16-hour battery. Feeds the mixer inputs the manual rates for line level.
- Input structure (XLR and 1/4 inch combo inputs on channels 1 and 2 with Line/Hi-Z switches; female XLR mic inputs rated for balanced mic or line level from almost any type of source, Onyx preamps with up to 60 dB of gain; stereo line inputs for 1/4 inch TRS balanced or TS unbalanced signals from any line-level source; 1/8 inch stereo input on channels 11/12 of the ProFX12v3; hybrid channels 5/6-9/10 carrying a mic input plus stereo line input with gain affecting the mic input only), amplifier-output warning (the manual warns against connecting an amplifier output directly to an input jack), 48V phantom power switch, GigFX engine with 24 effects, 24-bit/192 kHz 2x4 USB recording interface, single-knob compression, specifications (all inputs maximum +22 dBu; main mix XLR +28 dBu; mic in 3.3 kilohms; other inputs at least 20 kilohms; EIN -126 dBu for the ProFX12v3 tier; 3-band EQ low 80 Hz, mid 2.5 kHz, high 12 kHz plus a 100 Hz low cut): Mackie ProFXv3 Professional Effects Mixer with USB Owner's Manual, mackie.com/img/file_resources/ProFXv3_OM.pdf, accessed 2026-10-02