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Pro Intercom

MS300 Master Station

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MSRP: $1,299.99
(You save $65.00 )

3-Circuit Intercom Master Station, Intercom Only, Wired Only

For those who do not require all the capabilities of the MS301, we offer the MS300. It has all the features and qualities of the MS301, without the IFB, Paging and Auxiliary Audio functions, resulting in considerable cost savings.

3-Circuit Intercom Master Station

The MS300 is a 3-circuit Master Station with a unique hybrid configuration. Microprocessors operate all the switching, routing, and supervision functions while both the audio path and the core power supply remain analog. The result is a station with unrivaled flexibility, muscular reliability, and clean, smooth audio.

Supervision functions include the individual monitoring of each circuit for faults, and reporting such by front panel LEDs.

The 3 circuits can be operated independently or linked in A+B and A+B+C modes. All electronic "housekeeping" functions such as maintaining proper termination impedance are handled automatically.

The MS300 can be used with a headset or handset or may operated in hands-free mode by plugging in an accessory close-talking, noise-canceling goose-neck microphone (available separately) and adjusting sidetone for deep suppression.

Each MS300 circuit are for intercom communications mode only.  (need IFB, paging, and aux audio?  look at the MS301 instead)

The MS300 is compatible with most other 200ohm unbalanced party-line intercom devices.


  • 3-Circuit Master Station
  • Circuits Are Linkable
  • Independent Level Control
  • Mic Switch On Each Circuit
  • Internal Power Supply
  • Full Duplex, Hands-Free Operation

Shipping & Returns

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Shipping Options

We offer free ground shipping on most items for orders $300 and over, $20 for flate rate ground shipping on orders from $150 to $299.99, and $14 flat rate ground shipping on most items for orders under $149.99. *paints, liquids, and large volume items like boom bases (very heavy) or fake snow (not heavy, but very large) may incur a shipping surcharge. Exclusion of items from Free and Flat Rate shipping is at ProAdv's discretion. Offer is currently limited to Lower 48 US States.

We ship to North American addresses. Note that there are restrictions on some products, and some products cannot be shipped to international destinations, or even certain states depending on the item and state or local laws.

Our full policy is in our Terms and Conditions page.
Pandemic Availability Notice

Please Note: Due to unprecedented raw material and component shortages for finished goods throughout our industry, lead times for items that aren't currently in stock are longer than normal and cannot be guaranteed at present. Equipment needed by a firm date must be noted at time of order. While VLS cannot guarantee delivery by those dates, we will work with our suppliers to do everything possible to meet deadlines. We apologize for the inconvenience and appreciate your patience.

Same Day Shipping Cutoff time
(Due to Pandemic-related availability issues, this policy is currently suspended)

Online orders received by noon Eastern time typically ship the same day. If your delivery due date is critical please note your due date in the order messages at checkout, and then contact us.

Why Noon? Well, while we stock quite a few items in our warehouse, many items we have dropshipped by our vendors. They need time to process the order, so to ensure that we can get the order to the vendor and give them enough time to ship it out the same day, we need to get the order to them as early as possible in the day.

Shipping Rating

Please also note that the shipping rates for many items we sell are weight and dimension based, as this is the method that FedEx and UPS use to rate the package's cost to ship.

Returns Policy

We understand things happen and items occasionally need to be returned. To make things as hassle-free as possible, we have dedicated pages about our Returns Policy (what’s eligible to be returned) and our Return Process (how to go about returning eligible items)

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Need help? We're available at1-800-424-9991 - Email us