B&H Photo Video Pro Audio The Professional's Source 800.606.6969 / 212.444.6615
0 $0.00
Your cart is currently empty

You have 0 items in your cart

View Cart & Begin Checkout

N.Y.C. Store Pickup Ready Within the Hour

SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback

SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback

SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback Back View

Show MoreLess


No Longer Available

Product Highlights

  • 2 Monitors Sets
  • 100% Passive Circuit
  • 4 Separate Input Channels
  • 3 Pairs of Balanced Outputs
  • Stereo Unbalanced Output
  • Built-In Talkback Microphone
  • Talkback Microphone Input
  • Desktop or Rack Mount Usage
Show moreShow less

What item is right for you?

Ask our Experts!

The M-Patch 4 from SM Pro Audio is a passive volume control/switcher that is designed for monitoring and recording setups that require talkback. The unit is an ideal all-in-one solution, performing tasks that include monitor control with mute, mixing, level-matching, headphone monitoring, stereo- to-mono summing, and talkback. All of this is done without adding any coloration or noise due to the controller's 100% passive circuitry.

Multiple input signals can be connected and routed to various destinations, while controlling levels via a series of rotary volume attenuators. Control room outputs are automatically ducked 20 dB when talkback is engaged, using the built-in microphone, or another microphone of choice. Either can be activated from the front panel or via a remote switch.

Multiple switches provide mute, source selection, output assignments and stereo/mono operation. The main volume control is constructed with discrete 0.5% resistors using a switched mechanism that is far more accurate than using variable resistors, especially at low volumes. The chassis is suitable for either desktop use, or can be rack mounted using the included rack ears.

Dual Left/Right balanced combination XLR-1/4" TRS inputs
Dual Left/Right unbalanced RCA inputs
Dual 1/8" (3.5 mm) TRS stereo inputs
Three Left/Right balanced XLR outputs
Left/Right 1/4" TRS outputs
Left/Right unbalanced RCA outputs
Precision stepped film resistor master rotary volume control
1/4" TRS headphone output with selectable source
Built-in talkback microphone
External microphone input
Talkback with auto-ducking
Dual output selector switches
Stereo/mono and all mute switches
Rackmount ears included
Inputs 2 x XLR-1/4" TRS combo Left
2 x XLR-1/4" TRS combo Right
2 x RCA phono Left
2 x RCA phono Right
2 x 1/8" TRS stereo mini
1 x XLR Microphone
1 x 1/4" TS phone Mute Remote (pedal not included)
1 x 1/4" TS phone Microphone Remote (pedal not included)
Outputs 3 x XLR Left
3 x XLR Right
1 x 1/4" TRS phone Left
1 x 1/4" TRS phone Right
1 x RCA phono Left
1 x RCA phono Right
Headphones 1 x 1/4" TRS phone
Frequency Response: 20 Hz to 20 kHz, +/-0.5 dB
Maximum Output Level: 320 mW into 32Ω
Power Requirements 12~16V DC via included power adapter
Dimensions (WxDxH) 14.6 x 6.1 x 3.4" (370 x 155 x 85 mm)
Weight 11 lb (5 kg) approximately
SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback
  • External Power Supply
  • 2 x Rackmount Ears
  • One (1) Year Warranty
  • Be the first to review this item


    See more
    Kopul - Studio Elite 4000 Series XLR M to XLR F Microphone Cable - 6' (1.8 m), Black
    • You Pay: $16.99


    See more

    Headphones are essential for real-time monitoring and mixing.

    Senal - SMH-500 Professional Studio Headphones
    • You Pay: $49.99
    Polsen - HPC-A30 Closed-Back Studio Monitor Headphones
    • You Pay: $29.99


    See more
    Senal - ASM-4 Professional Two-Way Active 4" Studio Monitor Speakers (Pair)
    • You Pay: $549.00


    See more
    BOSS - FS-5U - Footswitch - Unlatch
    • You Pay: $27.95
    Raxxess - ER-04 Space Economy Rack (Black Oak)

    Books & Tutorials

    See more
    Cengage Course Tech. - Book: Mixing, Recording, and Producing Techniques of the Pros: Insights on Recording Audio for Music, Video, Film, and Games by Rick Clark
    • You Pay: $34.95
    Special Order ?
    This item is usually Drop Shipped from the MFR/Distributor within 7-10 business days (subject to availability). Your order will be charged at the time of placing the order with the MFR. Item is non-cancelable and non-returnable.
    PayPal Orders
    PayPal orders will be charged when the order is placed.
    International Orders
    For international orders, credit cards will be charged at time you place your order.
    View all Accessories
    See any errors on this page? Let us know.