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Tascam US-366 4X6 or 6X4 USB Audio Interface   

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The Tascam US-366 USB audio interface is made for professionals, and offers a combination of 4 in and 6 out, or 6 in and 4 out with its unique I/O st...Read More

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The Tascam US-366 USB audio interface is made for professionals, and offers a combination of 4 in and 6 out, or 6 in and 4 out with its unique I/O structure. The US-366 also features an on-board DSP mixer with high-quality DSP effects perfect for sweetening any project.

High-Quality HDDA - High Definition Discrete Architecture - Mic Pre-Amplifiers
To ensure superior sound, TASCAM organized months of tests and trials to design the HDDA mic pre-amplifier. Manufactured with a discrete structure and select premium parts, the HDDA pre-amp achieves a wide frequency response (10Hz to 68kHz), high S/N ratio, low noise and low THD+N.

Up to 192kHz/24bit Recording
In the process of creating music, many engineers have started utilizing high-resolution formats while recording to ensure the best quality sounds. The US-366 is suited perfectly for these high-quality minded recordings.

Two XLR/TRS (MIC/LINE) Inputs with Full +48V Phantom Power Supply
The US-366 is designed with two XLR with +48V phantom power and two TRS inputs. Having both options for condenser mics and line level inputs ensures you are getting the best possible sound and lowest-noise when recording. In addition, INPUT-1 can connect any high-impedance equipment directly, like a guitar.

DSP Mixer Designed for Music Creation and Podcasting
The DSP mixer function provides a multi-track mode and a stereo-mix mode.

Multi-track Mode
The multi-track mode is ideal for music creation. This mode delivers independent monitor-mixing from a send-level like an inline-console to a PC. In addition, this mode delivers monaural-monitoring.

Stereo-mix Mode
The stereo-mix mode makes podcast recording or broadcasting convenient and easy. An output audio signal from any PC can relay that signal back to the PC again via your DSP mixer. Any BGM from a PC can mix your voice by microphone then the mixed sound will transfer back to the PC again.

Onboard Effects Supports High-Quality Recording (Send Effects and Insert Effects)
The US-366 is designed with on-board effects such as compressor, 3-band EQ and Reverb all located on-board the DSP. While recording, you can use the input effects for any input signal and the reverb effect on any monitoring signal at the same time. (DSP effects can use on 44.1/48kHz operating)

Insert Effects
The input effects can be selected from compressor or 3-band EQ. Input effects can use various recording. For example, while recording vocals you can boost your high-frequency range with the 3-band EQ. Also, the compressor effect is very convenient at recording especially for bass guitar, vocal and drums.

Send Effect
The send effect include just reverb. The reverb effect is necessary articles at recording. Monitoring sound will get wet-sound by this reverb effect, but a send-sound to a PC keeps just dry sound.

Dedicated MIXER PANEL Button Recalls The DSP Mixer with One-Click
The US-366 is built with a "MIXER PANEL" button located conveniently on top. This button provides a one-click recall function for the DSP-mixer. When pushed a second time the mixer panel will be conveniently hidden.

LINE 3-4 Analog Connectors - Select Between Input or Output, Up to Six Inputs or Six Outputs
The US-366's LINE 3-4 connectors can be selected between input and output to customize TASCAM's US-366 to any recording environment. When "INPUT" is selected, you can connect an abundance of line-level audio devices. When selecting "OUTPUT", connect to devices such as multiple headphone amplifiers. This system provides dedicated monitoring management for each player. (When operating on 192kHz, LINE 3-4 connectors outputs same signal as digital output.)

Coaxial/Optical Digital Inputs/Output
The US-366 has two types of digital input/output connectors (RCA Coaxial and TOS-link Optical). Two outputs can transmit the same signal at the same time but when input is selected, only one connector is available at a time.

USB 2.0 audio interface with on-board DSP mixer and up to 96/192kHz recording.

  • High-quality HDDAHigh Definition Discrete Architecture) mic pre-amps
  • Up to 24bit/96kHz recording(US-366 supported 24bit/192kHz recording)
  • Two XLR/TRS (MIC/LINE) inputs with full +48V phantom power supply
  • Low-latency monitoring via DSP mixer
  • On-board digital mixer(DSP mixer) delivers two operation modes
  • On-board digital effects(DSP effects)(DSP effects can use on 44.1/48kHz operating)
  • Dedicated "MIXER PANEL" button recalls DSP mixer with one-click
  • Oversized LINE OUT volume knob
  • Two TRS analog balanced outputs
  • Two RCA analog unbalanced outputs
  • 18mW+18mW headphone output
  • Desktop design provides highly stability and usability
  • Aluminum body provides premium looks and luxurious feel
  • USB bus-powered for mobile recording
  • Up to 24bit/192kHz recording
  • LINE 3-4 connectors can select between input or output, up to six inputs or six outputs(When operating on 192kHz, LINE 3-4 connectors outputs same signal as digital output.)
  • Coaxial/Optical digital input and output (one input connector available at a time)
  • RC-3F optional footswitch ready
  • Includes Cakewalk SONAR X3 LE (Windows) and Ableton Live Lite 9 (Mac OS X/Windows)

Four or six inputs, you choose what you need. Order the US-366 today!


US-366 4X6 or 6X4 USB Audio Interface

  • Supported sampling frequency
  • 44.1/48/88.2/96/176.4/192kHz
  • Supported bit rate
  • 16/24bit (Internal operation is 24bit)
  • Analog audio Inputs
  • MIC IN
  • (INPUT 1/L, 2/R)
  • XLR-3-31(1:GND, 2:HOT, 3:COLD), BALANCED
  • Input impedance
  • 2.2kohms
  • Nominal input level
  • (INPUT:MAX) -65dBu
  • Nominal input level
  • (INPUT:MIN) -22dBu
  • Maximum input level
  • (INPUT:MIN) -6dBu
  • LINE IN (INPUT 1/L, 2/R)
  • 6.3mm(1/4") TRS-jack(T:HOT, R:COLD, S:GND), BALANCED
  • Input impedance
  • 15kohms(LINE)/1Mohms(GUITAR)
  • Nominal input level
  • (INPUT:MAX) -39dBu(LINE)/-55dBV(GUITAR)
  • Nominal input level
  • (INPUT:MIN) +4dBu(LINE)/-12dBV(GUITAR)
  • Maximum input level
  • (INPUT:MIN) +20dBu(LINE)/+4dBV(GUITAR)
  • LINE IN (LINE I/O 3-4)
  • RCA pin-jack (When set to "INPUT" at LINE I/O switch) -
  • Input impedance
  • 15kohms
  • Nominal input level
  • -10dBV
  • Maximum input level
  • +6dBV
  • Analog audio outputs
  • LINE OUT (LINE OUT 1/L, 2/R)
  • 6.3mm(1/4") TRS-jack(T:HOT, R:COLD, S:GND), BALANCED
  • Output impedance
  • 100ohms
  • Nominal output level
  • +4dBu
  • Maximum output level
  • +20dBu
  • LINE OUT (LINE I/O 3-4)
  • RCA pin-jack
  • (When set to "OUTPUT" at LINE I/O switch)
  • Output impedance 200ohms
  • Nominal output level -10dBV
  • Maximum output level +6dBV
  • Digital audio inputs
  • (DIGITAL IN) RCA pin-jack
  • (When set to "COAXIAL" at DIGITAL IN switch) -
  • Format IEC60958-3(S/P DIF)
  • (When set to "OPTICAL" at DIGITAL IN switch) -
  • Format IEC60958-3(S/P DIF)
  • Digital audio outputs
  • (DIGITAL OUT) RCA pin-jack
  • Format IEC60958-3(S/P DIF)/ IEC60958-4(AES/EBU)*
  • Format IEC60958-3(S/P DIF)/ IEC60958-4(AES/EBU)*
  • *Output format can be selected "S/P DIF" or "AES/EBU" on INTERFACE tab of DSP mixer.
  • Connector 6.3mm(1/4") stereo phone jack
  • Maximum output level 18mW+18mW or more(THD+N 0.1% or less, 32ohms loaded)
  • USB
  • Connector USB B type 4-pin
  • Format USB2.0 HIGH SPEED mass storage class
  • Connector 2.5mm TRS-jack
  • Supported protcol Dedicated protocol for RC-3F
  • (Mackie Control or HUI emulation) -
  • Power
  • USB bus powered (5V, Max 500mA)
  • Power consumption
  • 2.5W
  • Dimensions
  • 140(W)×42(H)×140(D)mm
  • Weight
  • 500g
  • Operating temperature
  • 5-35˚C
  • Audio performance
  • ADC chip set dynamic range 102dB *1
  • DAC chip set dynamic range 106dB *2
  • Frequency response
  • Mic preampr 10Hz to 68kHz, +0.5/-3.0dB
  • MIC IN to LINE OUT 10Hz to 68kHz, +0.5/-3.0dB
  • MIC IN to PHONES 10Hz to 30kHz, +0.5/-1.0dB
  • THD 0.0045% or less *3
  • S/N ratio 98dB or more *4
  • EIN -120dBu or less *5
  • Operating system requirements
  • Windows
  • OS Windows XP:32bit SP3 or more, 64bit SP2 or more
  • Windows 7:32bit, 64bit
  • Windows 8:32bit, 64bit
  • Macintosh
  • OS Mac OS X Snow Leopard(10.6.8), OS X Lion, OS X Mountain Lion
  • DRIVER Core Audio

Review Snapshot

by PowerReviews
TASCAMUS-366 4X6 or 6X4 USB Audio Interface

(based on 1 review)

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Reviewed by 1 customer

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(18 of 18 customers found this review helpful)


Good sound, good options


from No VA

About Me Novice

Verified Buyer


  • Clear Sound
  • Compact
  • Easy To Use
  • Lightweight
  • Versatile


    Best Uses

    • Amateur Recording
    • Home Studio

    Comments about TASCAM US-366 4X6 or 6X4 USB Audio Interface:

    I am a novice at home recording and this is only the second USB audio interface I've used. The previous interface was a Mackie 4 channel mixer (MultiMix 4), which was noisy and one day it just died.

    Anyhow, on to the Tascam. I'll start with my positive experiences with the unit. It makes high-quality recordings; quiet; lightweight; USB powered (so, no need for an external or additional power source); compact (takes up little room on my desk); has multiple outputs for playback including optical, RCA stereo line out, Coaxial line out (which I use), headphone (which can be used simultaneously with other output channels), and a line out with 2 1/4" outputs. The outputs can only be used one at a time (e.g., can't do coaxial and RCA at the same time) + headphones (headphones can be used for monitoring regardless of which line output is or isn't connected. This unit has phantom power. I went with this unit because of the multiple output choices. Comparably priced competitors didn't have nearly as many options. Also records at a higher sampling rate than comparable Focusrite (actually, I don't know if this is better, but I just assume it is). Driver software is available on the Tascam website and mine was up and running with my MacBook in no time. I use the Tascam with Apple's Logic Pro X.

    Now to the confusing: I'm not sure why it is listed as 4x6 (4 input and 6 output) and 6x4 (6 input and 4 output). Actually, I know why, but I think it's deceiving. To cut to the chase, at max, you can only record 2 channels at the same time. The 4X6 or 6X4 makes it sound like you could have 4 or 6 independent channels recording simultaneously, but's that's incorrect. As an example of what you could do: you could mic your voice and mic your guitar and record your singing and guitar playing at the same time. Or plug two guitars directly into the unit and record simultaneously. Or use one XLR connection and one with the line connection. The way Tascam can say there are 4 input channels is because there are four *possible* ways to input a signal. That's because channel one has the option to input through XLR or line (1/4" jack which is a guitar cable size). Channel two also has these two options. However, for each channel you can only use either the XLR or the line input for that channel, not both. If you plug your guitar into the Channel 1 line input and then a mic into the channel one XLR at the same time you'll get feedback. Same applies to channel two. The "6 inputs" part is because the RCA connections on the back can be switched to either input or output. It it's set to input then, with the right connections) you can hook up some external audio source (CD player, MP3 player, etc) to input through the Tascam. It goes without saying that this wouldn't then be another instrument channel.

    Personally, having only 2 channels is fine as I usually only record one thing at a time, but I thought it was "less than accurate" the way that Tascam market's this device.

    The next confusing thing is not that big of a deal; it's the prominent "Line Out" knob. If I just looked at this unit, I would guess that knob was a master output volume control knob. Nope. It controls the output volume for the 1/4" output connectors. Presumably that output would go to powered studio monitors. Since I hook this unit up through the coaxial connection to my stereo, I don't use the 1/4" output, which means I never touch the most prominent knob on the whole unit. Just seems overblown or strange to make this particular knob the largest one.

    Last comment: I read somewhere else that this unit was made from metal. This is incorrect. It's quality plastic. it kind of looks like billet aluminum, but it's plastic. It's fine; it doesn't feel particularly cheap ,but it's not metal.

    Overall, I like this unit and there's nothing at it's price point that has as many features or quality.

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