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Sound Devices MixPre-3 II 3-Channel / 5-Track Multitrack 32-Bit Field Recorder

Sound Devices MixPre-3 II 3-Channel / 5-Track Multitrack 32-Bit Field Recorder
Key Features
  • Field Recording, Filmmaking & Podcasting
  • 32-Bit Recording / 32-Bit USB Streaming
  • Record up to 192 kHz, Stream to 96 kHz
  • 3 x High-Gain, Low-Noise Mic Preamps
For independent filmmakers, field recordists, and podcasters who need pristine audio capture of up to three microphones, the Sound Devices MixPre-3 II multitrack field recorder is an ideal tool. Record up to three tracks of external sources plus a stereo mix at up to 32-bit / 192 kHz while monitoring your audio headphones. If you choose to use the MixPre-3 II as your studio interface, you'll be able to achieve sample rates up to 96 kHz
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Sound Devices MixPre-3 II Overview

  • 1Description
  • 2Kashmir Preamps
  • 3On-Board Mixing
  • 4Audio Interface Functionality
  • 5USB Audio Input
  • 6Connections
  • 7Adjust on the Fly
  • 8Built-In Timecode Generator & Bluetooth Control
  • 9Transport and Mounting Options
  • 10Key Features at a Glance

For independent filmmakers, field recordists, and podcasters who need pristine audio capture of up to three microphones, the Sound Devices MixPre-3 II multitrack field recorder is an ideal tool. Record up to three tracks of external sources plus a stereo mix at up to 32-bit / 192 kHz while monitoring your audio headphones. If you choose to use the MixPre-3 II as your studio interface, you'll be able to achieve sample rates up to 96 kHz

The MixPre-3 II offers many upgrades over its predecessor. Chief among these features is the ability to record at 32-bit floating point to an internal SD card. The unit also functions as an audio interface capable of 32-bit floating point streaming over USB to a Mac computer. This makes it nearly impossible for you to clip (distort) audio on the way in. Whether you're recording hot or making use of the unit's astounding 142 dB dynamic range, you'll only be handicapped by the quality of your microphone.

Other improvements include the ability to auto-copy recorded tracks to USB thumb drives, making file transfers a breeze. Lovers of sync will revel in a handy new feature: a full-fledged, built-in timecode generator, accurate to better than 0.2 ppm (0.5 frames in 24 hours). Even when powered off, the MixPre-3 II maintains accurate timecode for up to four hours.

All of this is available in a three-channel package that can be powered from wall chargers, computers, AA batteries, or Sony L-series batteries. Whether you use the device in an advanced or basic capacity, the MixPre-3 II will suit any intimate, field-based production.

Kashmir Preamps
Like the original unit, the MixPre-3 II offers class-A Kashmir mic preamps. All inputs are fully RF-filtered to keep interference out.
On-Board Mixing
Create a mix using the built-in 3x2 portable mixer.
Audio Interface Functionality
When connected to a Mac or Windows computer, the MixPre-3 II can serve as a 5-input / 2-output USB audio interface for your favorite audio recording software. The unit will record three tracks in isolation and provide a stereo mix of all three to boot. You can stream audio at sample rates up to 96 kHz.

The unit can send a complete 32-bit float audio signal over USB when connected to a Mac computer running macOS Catalina (version 10.15 or later).

USB Audio Input
Stream up to two tracks into the unit over USB, using the MixPre-3 II as a recorder from your host device. If you're a musician, you can utilize this feature to record a stereo mix from your host DAW as a backing track for further standalone recording.
For inputs, you'll find three XLR jacks. Headphone output connections are handled over a 3.5mm jack, and stereo line outputs can be secured over a dedicated stereo 3.5mm jack. Timecode I/O is made possible via 3.5mm connections, though you also have the option of HDMI for inputting timecode.
Adjust on the Fly
Adjust the limiters, change the bit depth, shift panning and polarity in the stereo mix, and filter out extraneous bass rumble with low-cut filters. Whether you record to an SD card or to your computer over USB, the MixPre-3 II can be customized to your needs.
Built-In Timecode Generator & Bluetooth Control
Thanks to the device's timecode generator, you can even trigger recording from the camera. With built-in Bluetooth, you can control the unit over the Wingman app, available from Sound Devices. This app displays high-resolution meters, current timecode, transport buttons, and more.
Transport and Mounting Options
The MixPre-3 II is rugged, lightweight, and relatively compact, so you can throw it in a bag or mount it to a tripod or camera.
Key Features at a Glance
  • Kashmir microphone preamps with 48V phantom power
  • Internal timecode generator
  • Sample rates up to 192 kHz
  • Bit depths up to 32-bit float
  • Adjustable limiters
  • SD card recording and reading
  • Backup to USB drive
  • 10 seconds of pre-roll at 48 kHz
  • USB control surface support
  • Customize with plugins
  • Add low cut, high pass, delay, polarity invert, and panning
  • Simultaneous recording, mixing, and USB audio streaming
  • Trigger record via timecode or HDMI timecode
  • Bluetooth for wireless control via Wingman app
  • Basic, advanced, and custom modes
  • High-fidelity headphone amplifier


UPC: 854454006527

Sound Devices MixPre-3 II Specs

Portable Recorder
Number of TracksWAV:
5 (3 Inputs + Stereo Mix)
Maximum Sampling Rate192 kHz / 32-Bit
Built-In SpeakerNo
Display1.6" / 40.64 mm Color LCD Touchscreen
Memory Card SupportSD, SDHC, SDXC (Up to 512 GB)
Internal StorageNone
Audio File FormatsRecording:
Sample RatesWAV:
44.1 / 47.952 / 48 / 48.048 / 96 / 192 kHz
Bit Depth16 / 24 / 32-Bit (A/D Conversion)
Signal Processing & FXDelay, Limiter, Low-Cut Filter
Timecode SupportYes
Frame Rates Supported23.976 / 24 / 25 / 29.97 / 29.97 DF / 30 / 30 DF
Clock Accuracy±2 ppm / 0.5 Frame per 24 Hrs (Timecode)
Analog I/O3 x XLR 3-Pin Female Balanced Line/Mic Input
1 x 1/8" / 3.5 mm TRS Female Unbalanced Aux Input
1 x 1/8" / 3.5 mm TRS Female Unbalanced Headphone Output
1 x 1/8" / 3.5 mm TRS Female Unbalanced Line Output
Digital I/O1 x 1/8" / 3.5 mm SMPTE Timecode Input
1 x 1/8" / 3.5 mm SMPTE Timecode Output
1 x HDMI Type-D SMPTE Timecode Input
Phantom Power+48 V, Selectable On/Off
Phantom Power Current10 mA per Channel
Plug-In PowerYes, 3 V
System Connection1 x USB-C (2.0)
1 x USB-A (Control, Text Entry, Thumb Drive)
BluetoothBluetooth 4.0 (Remote)
Frequency ResponseWAV:
10 Hz to 80 kHz ±0.5 dB (at 192 kHz)
Gain/Trim RangeMic Inputs:
+6 dB to +76 dB
Line Inputs:
-20 dB to +30 dB
Mic/Aux Inputs:
+10 dB to +40 dB
Line/Aux Inputs:
-10 dB to +20 dB
Up to +20 dB
Headphone Outputs:
Up to +20 dB
Max Input LevelMic Inputs:
+14 dBu
Line Inputs:
+28 dBu
Mic/Aux Inputs:
-10 dBu
Line/Aux Inputs:
+10 dBu
Max Output LevelOutputs:
+7.8 dBu
Headphone Output Power300 mW per Channel
Dynamic RangeA/D Converters:
142 dB
ImpedanceMic/Line Inputs:
4 Kilohms (Active-Balanced, Line Level, Mic Level)
Mic/Aux Inputs:
100 Kilohms (Mic Level, Unbalanced)
Timecode Input:
20 Kilohms
Timecode Output:
1 Kilohms
-10 dBu (0.005%)
EIN-128 dBu (A-Weighted)
Power OptionsBattery, USB Bus Power, AC/DC Power Adapter
Battery Type4 x AA (Included)
2 x L Series (Requires Optional Equipment, Hot-Swappable, Not Included)
AC/DC Power Adapter5 VDC (Included)
AC Input Power100 to 240 VAC, 50 / 60 Hz
Mounting Options1/4"-20 Male (Top)
1/4"-20 Female (Bottom)
Operating Temperature-4 to 140°F / -20 to 60°C
Storage Temperature-40 to 185°F / -40 to 85°C
Operating Humidity0 to 90%
Dimensions5.7 x 1.4 x 4.3" / 144 x 36 x 110 mm
Weight16.8 oz / 0.5 kg (without Batteries)
Packaging Info
Package Weight2.645 lb
Box Dimensions (LxWxH)10.3 x 7.4 x 4.3"

Sound Devices MixPre-3 II Reviews

Totally overkill for what I need but that's why I love it

By Hamza
Rated 5 out of 5
Date: 2023-01-11

Just superb audio quality and so many features I don't know what to do with it. Everyone knows this has some of the quietest preamps and is engineered to perfection; as someone starting out this is totally above what I need. Coming from a Zoom H6, this doesn't really compare, which is reflected in the price. The device is extremely small and user friendly. Compared to handheld recorders it's still quite small, but you'd have to find equivalent small microphones like those capsules on Zoom and Tascam devices. The touchscreen is surprisingly good to use and responsive. I made hardly any mistakes navigating the UI. The extra USB port for backups is also brilliant because you can quickly plugin other devices. I was making presets on the device and I realized I could quickly plug in my computer keyboard, and it was a breeze. As a USB audio interface it works as intended, and it's nice to have a separate 3.5mm output in addition to the headphone output. For flaws, I will say the interface is slightly confusing because 32 bit means you have to think about gain staging differently; that's a 'flaw' that's present in any 32 bit recorder. I don't love the Sony battery solution, it makes it seem bulky (I haven't bought the Sony sled but I will soon). Lastly, switching bit depth (24 to 32 bit, for example) requires a device reboot. This makes sense, but it's annoying if you have to use it as an interface (which is usually best done at 24-bit for software/OS compatibility) and then want to record something at 32 bit. Overall this is an incredibly engineered device, and pack full of features. If you're looking for an upgrade to a handheld device and have proper external mics, this is as good as it gets.

Good user interface but a few significant bugs

By Bruce
Rated 4 out of 5
Date: 2022-06-30

The recorder with its touch sensitive screen is relatively intuitive as recorders go. This is its best attribute. It also includes integrated Bluetooth unlike the Zoom F6. It is a hungry little beast and will quickly devour AA batteries used in the mounted sled. The sled also blocks access to the SD card bay. In theory the device can be powered with an external USB-C connected power source but in reality this only works with the AA battery sled off the recorder. With the sled attached the recorder will only draw power from the AA batteries and drain them in a few hours.

Does not work with USB C power from power banks

By Bruce
Rated 2 out of 5
Date: 2022-06-28

I hoped to have a more compact rig and purchased the MixPre-3 II sound recorder and an Anker Powercore USB C power bank. There needs to be 4 AA batteries in the Sound Devices sled and then the recorder is supposed to pull power from the USB C port when it senses power at the port. Regardless of the power bank used and the USB C cable used the MixPre-3 fails to recognize the power bank and instead drains the 4 AA batteries in the sled. This greatly reduces the utility of the Sound Devices MixPre-3 II for use in the field.

Pro sound for Filmmakers

By Royal
Rated 5 out of 5
Date: 2021-09-14

I love this small sound Recorder , it is professional and easy to use . And menu is friendly . Sound is perfect and quality is good .

Amazing audio with an intuitive interface.

By Steven
Rated 4 out of 5
Date: 2021-09-02

Love my MixPre. The quality and range of the pre-amp is second to none. Had no problem capturing the more animated parts of conversation without clipping. Only thing that keeps it from a five star review is that it consumes so much power (drained four new AA batteries in less than an hour) that I doubt I'll ever use it as a field recorder. It'll have to be parked in the studio.

Fantastic... except.

By Howard
Rated 4 out of 5
Date: 2021-07-22

There is the mixpre itself and unfortunately, there is the on/off switch and USB ports. Those rate a minus five. The device itself is superb. Because of such high power consumption I decided on a 20,000 power core as a cheaper alternative to a sled and L battery. An intended bonus is easier access to the SD card from leaving the battery sled detached. The bad news is that with a USB-C plugged in to supply power, the on/off switch is virtually inaccessible to fingers so I'm using a pencil eraser to squeeze in the narrow gap. Foolishly I thought I could outsmart the designers by resorting to a right angle USB-C cable. They were already ahead of me by closing off that option by placing the USB-C such that a USB flash drive cannot be plugged in because the C right angle covers the A port opening. Even though I'm not an engineer, I'll go out on a limb and speculate that a more ridiculous layout could have possibly been designed, but I'm simply not smart enough to know how. I do wonder if they considered that someone might to want to turn it on and off.

Great for recording birds

By Jeffrey
Rated 5 out of 5
Date: 2023-01-04

I upgraded to the MixPre-3 II from a Zoom H4N. The interface is great and it's easy to use. The 32-bit float recording format makes it better to record in the field not having to worry about gain.

Best user interface of any recorder in its category

By Bruce
Rated 4 out of 5
Date: 2022-07-01

I had used a MIxPre-3 II and then got a Zoom F6 and the difference in the user interface was night and day. The SD Mixpre-3 has a touch screen and very intuitive menu structure. The Zoom F6 is a nightmare and 20 years out of date with its design and navigation buttons. I like being able to pair channels 1 and 2 so I can use the #1 control for the gain and the #2 control for the balance. Great to only need to manipulate one knob while recording. One con is that I cannot access the SD card if a sled is mounted to the bottom of the recorder. The Zoom F6 shares this design defect. The other primary issue is with the Mixpre-3 II Power Switchover Priority which does not actually work. If any batteries are in an attached sled the MixPre-3 will draw power only from those batteries and not from a connected power source using the USB-C port on the recorder. I stopped using batteries in the sled and for the most part leave the sled off entirely and power the recorder using only a USB-C charge cable and power bank. This makes it easy to access the SD card and replace it and no worries about the sled mounting tabs breaking off.

See any errors on this page? Let us know


The specs say operating temperature of Mix Pre 3 ...

The specs say operating temperature of Mix Pre 3 II is -4 to 86°F . The Mix pre 3 goes up to 140°. Thats a huge difference. 86° is ridiculously low. Is that correct?
Asked by: Geoff
Per Sound Devices, the operating temperature range is -20 to 60 C, which is -4 to 140 Fahrenheit. I have sent a note to the web group for a correction.
Answered by: John
Date published: 2021-01-07

What is the correct cable to connect to camera ...

What is the correct cable to connect to camera from aux port for scratch track?
Asked by: Allen
1/8" stereo from the MixPre. Other end would depend on the camera.
Answered by: Michael
Date published: 2021-02-22

What accessory can I use to mount this on a mic ...

What accessory can I use to mount this on a mic stand or neck of a tripiod?
Asked by: Patrick
There is 1/4 inch thread in the bottom, just like you'd find in the bottom of a camera. Mount it directly to anything with a 1/4 screwpost. There is also a springloaded 1/4 post/bolt for the top, that lives recessed inside. Push a hex wrench up through a hole in the bottom, to pop it out on top and screw it into whatever you want to mount there. So you either need something with 1/4" post, or an adapter to 1/4". As an example, here's what I do much of the time for a static shot of a live music performance: 1. Turn camera upside down, then place MixPre upside down on the bottom of the camera. 2. Use the hex wrench to push the 1/4" post into the 1/4" thread of the camera, and tighten it down. Now the MixPre is mounted to the camera. 3. Place quick-release plate (for tripod) upside down on the MixPre, line up the 1/4" post of the plate with the 1/4" thread of the MixPre, and tighten it down. Now you have a camera and audio recorder in one unit, with a quick release plate for mounting on a tripod. To mount it on a mic stand... just need an adapter from your mic stand threads to 1/4" post.
Answered by: Jeremiah
Date published: 2020-05-12

How does this compare to the Zoom F6?

How does this compare to the Zoom F6?
Asked by: Elazar
I couldn't say you are asking about a product that has not even arrived yet. The F6 does not arrive till October.
Answered by: John
Date published: 2019-09-16

Can you jam timecode from a camera that sends ...

Can you jam timecode from a camera that sends timecode over hdmi like the Sony FS5 without leaving the hdmi cable plugged in?
Asked by: kevin
The MixPre does not see timecode from an external source, unless it is recorded onto an unused audio track. It does have a generator that can feed your other devices, such as a camera.
Answered by: James Cruz
Date published: 2022-07-25

On the specs for the Mixpre 3 II, it says there ...

On the specs for the Mixpre 3 II, it says there are 3 XLR-1/4 Combo inputs. That is incorrect according to the pictures. They are only XLR inputs and not a Combo Input. Can you confirm?
Asked by: Henry
Yes, I can confirm that the 2 Mixpre 3 ll units that I purchased from B&H have only the XLR inputs.
Answered by: James
Date published: 2019-11-26

Here's a simple one but I haven't found the ...

Here's a simple one but I haven't found the answer: can MIXPRE-3 II recording be triggered by the camera Fuji XT-3? And if so, any steps regarding how that is done would be appreciated.
Asked by: David
No, the only way to control the Sound Devices Mixpre is with a controller like an Korg nanoKontrol, the controller will allow you to full control the recorder. with a usb cable attched to Mixpre you will be able to record, stop, play, rewind, fastforward and mix the inputs mic channels.
Answered by: Raul
Date published: 2022-12-06

Can I hook my wireless headphones to the ...

Can I hook my wireless headphones to the headphone out via bluetooth?
Asked by: steve
Depending on the quality of your bluetooth transmitter, you might find the latency it introduces makes it basically unusable.
Answered by: Steven
Date published: 2020-07-25
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