Question 1

how do you control channel 3/4 gain?

Accepted Answer

3 and 4 are fixed and are line level.  3 and 4 are designed so one can bypass the built in preamps available on 1 and 2.  3 and 4  are there to use with better preamps like channel strips if u have them.  There is no gain no them. This is  also another reason this device is ingenious.  U cant find another device in this price range that gives u the sound and flexibility with 4 inputs and 4 outputs. The M4 is a no brainer.  Say u have a mackie 1202.... u could use pres there and with the 2 built in.  Or if say u had a 2ch micpreamp like the ART MPA.  Gives u a chance for different flavors.  Or maybe your keyboard or MPC to record into. $219.00 bucks.  Nothing else to say. Besides they are flying off the shelves. Better get it while u can.

Question 2

Mic into M4 mic pre 1, M4 output 1 to compressor in, compressor out to M4 input 3...would this work for a hardware compressor insert?

Accepted Answer

Not at all.  U need another preamp and compressor in front of that and use the 3rd in put on the rear.  U could also use like a channelstrip style preamp eq compressor or what ever in may have.  If u use pro tools u can add a compressor in an aux and rout its output to another track and get a software compression there.

Question 3

Can this interface record all 4 line in signals, independently and at the same time into your daw?  or, does it mix down to a stereo track?

Accepted Answer

The M4 can record 4 tracks simultaneously in your DAW.

Question 4

I have a schitt jotunheim amplifier which accepts xlr input from a dac. would i be able to use a balanced trs to xlr cable to send sound to the unit?

Accepted Answer

The M4 has balanced outputs on all 4 outputs. So yes it will convert TRS 1/4 to an XLR connector. See the amplifier specs for its pinout wiring on xlr input to be sure the pins match correctly.  All XLR inputs are not the same depending on the manufacturer.

ASIN	B08129P2XY
Audio Input	Audio Interfaces (e.g. USB), Microphones XLR, 1/4 inch), Instruments
Brand Name	MOTU
Compatible Devices	USB devices
Connectivity Technology	USB
Customer Reviews	4.6 4.6 out of 5 stars (854)
Frequency Response	192 KHz
Item Dimensions D x W x H	10.8D x 21W x 21H centimeters
Item Type Name	Audio Interface
Item Weight	1 Pounds
Manufacturer	Motu
Manufacturer Part Number	3140
Maximum Sample Rate	192 KHz
Model Number	M4
Number of Channels	8
Number of Items	1
Operating System	Mac
Supported Software	Performer Lite, Live Lite production
UPC	839128006126
Unit Count	1.0 Count
Warranty Description	1 Year Local Warranty

MOTU M4 4x4 USB-C Audio Interface 4-in/4-out USB-C Audio Interface with 2 Microphone Preamps, LCD Screen, Hardware Monitoring, Loopback, and 6+GB of Free Content - Mac/PC/iOS

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