Studio Technologies MODEL-233
Announcer's Console


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List Price: $1,195.00
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The Model 233 Announcer's Console is the premier audio control "hub" for announcers, commentators, and live-event production personnel. Compatible with essentially all broadcast and production audio system environments, the tabletop unit is ideally suited for numerous applications including stadium announce, on-air television, and radio broadcasting.

Flexible Setup
Three pushbutton switches—Main, Talkback 1, and Talkback 2—operate under microprocessor control to offer unmatched flexibility and "click-free" audio routing. The Main button controls the main output with operating modes that include push-to-mute (cough), push-to-talk, and latching. The Talkback 1 and Talkback 2 buttons control dedicated line-level outputs to provide talent-originated cue signals to production personnel. The Talkback buttons can also be configured to send audio to the dual-channel intercom interface. "Stadium announce" mode and "production" mode enable special feature sets for these applications. Simple customization of the button labels ensures the user is presented with an easy-to-use set of controls and indicators.

Superior Audio
Featuring a studio-inspired low-noise/low-distortion preamplifier design, adjustable gain, and 48 volt phantom power, the Model 233 is compatible with balanced dynamic and condenser microphones. With high output capability and the use of an output transformer expressly designed for professional audio applications, the main output offers broadcast-quality audio as the stadium announcement, on-air, or other primary audio feed.

Powerful Monitoring
The headphone output's circuitry provides high output levels with very low distortion and noise. The user can monitor up to four external audio sources: line input 1, line input 2, intercom channel 1, and intercom channel 2. Possible signal sources for the line-level inputs include off-air receivers, wireless IFB systems, and audio consoles. The Model 233's intercom interface is compatible with standard party-line intercom systems from manufacturers such as RTS™ and Clear-Com®. If desired, broadcast IFB can also be connected to the intercom input. Each source can be individually assigned to the left, right, or both channels of the binaural headphone output. Three rotary controls allow the user to adjust the levels of the externally connected sources and the user’s sidetone. Studio Technologies' unique "auto-terminate" feature ensures talkback-to-intercom "squeal" will never occur in the headphone output if an intercom line is disconnected.


  • Microphone preamp with selectable gain and 48 volt phantom power
  • Two line-level inputs
  • Three pushbutton switches offer programmable "click-free" audio path control
  • Transformer-balanced main output
  • Two line-level talkback outputs
  • Dual-channel intercom interface with "auto-terminate"
  • Stereo headphone monitoring of selectable sources and integrated sidetone
  • Three rotary headphone output level controls for external sources and sidetone
  • Microcontroller-directed audio routing
  • Tally status output and auxiliary relay contacts
  • Powered by intercom or by supplied external DC source
  • All configuration switches and trim potentiometers accessible via the bottom of the enclosure


General Audio:
Frequency Response: Frequency Response: 20 Hz-20 kHz, ±0.1 dB, mic in/main out
Distortion (THD+N): 0.008%, measured at 1 kHz, mic in/main out
S/N Ratio: 80 dB, referenced to –46 dBu mic in/–2 dBu main out

Mic In, Line In 1 & 2, Intercom Interface: 3-pin female XLR-type
Main Out, Talkback Out 1 & 2: 3-pin male XLR-type
Headphone Out: ¼-inch 3-conductor phone jack
24 Vdc Power In: 2.1 x 5.5 mm coaxial power jack

Spare Connector Locations: 3
Allows up to three Neutrik NC*D-L-1 connectors to be installed (*=3F, 3M, 5F, 5M, 6F, 6FS, etc.)

Microphone Input/Preamplifier:
Type: electronically balanced
Input Impedance: 2 k ohms
Gain Range: 20 to 60 dB, adjustable in 10 dB steps
Compatibility: dynamic or phantom-powered mics
Phantom Power: 48 Vdc, nominal, meets IEC 61938

Threshold: 2 dB above nominal level
Attack/Release Time: 2 mSec/100 mSec
Slope: 5:1

Line Inputs: 2
Type: balanced, transformer-coupled
Impedance: 10 k ohms
Nominal Level: –12 dBV to +6 dBu, adjustable

Intercom Interface:
Type: 2-channel, unbalanced (pin 1 common; pin 2 DC with channel 1 audio; pin 3 channel 2 audio)
Compatibility: single- and dual-channel intercom systems such as from RTS™ and Clear-Com®
Impedance: 10 k ohms
Nominal Level: –10 dBu

Main Output:
Type: balanced, transformer-coupled
Nominal Level: –2 dBu
Maximum Level: +20 dBu into 2 k ohms
Impedance: 100 ohms

Line-Level Talkback Outputs: 2
Type: transformer-coupled with series capacitors and isolation resistors
Impedance: 600 ohms
Nominal Level: +4 dBu
Maximum Level: +11 dBu (compressor restricts maximum)

Headphone Output: 1, binaural (stereo)
Compatibility: intended for connection to mono or stereo headphones or headsets with nominal impedance of 100 ohms or greater
Type: voltage driver
Maximum Output Voltage: 8 Vpp, 150 ohm load

Auxiliary Relay:
Contacts: 2, form C (Common, Normally Closed, Normally Open)
Rating: 1 A, 30 W (resistive)

Tally Output: 3.5 Vdc, 12 mA maximum, nominal

Power Sources:
Intercom Interface: 24-32 Vdc, 125 mA
External: 24 Vdc, 90 mA; acceptable range 20-30 Vdc. All units include a universal input/24 Vdc output power supply.

Dimensions (Overall):
8.1 inches wide (20.6 cm)
3.3 inches high (8.4 cm)
8.5 inches deep (22.4 cm)

Weight: 4.5 pounds (2.1 kg)

For Model 200 Series Announcer's and Producer's ConsolesStudio Technologies 5-Pin Headset Connector Assembly For Model 200 Series Announcer's and Producer's Consoles

The 5-Pin Headset Connector Assembly (part no. 13579) from Studio Technologies allows a technician to add a 5-pin female XLR connector to Studio Technologies' Model 200 Series Announcer's and Producer's Consoles. The assembly provides ...

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Our Price:$54.74List Price: $56.00

7-Pin Headset Connector AssemblyStudio Technologies 13561 7-Pin Headset Connector Assembly

Allows a technician to add a 7-pin female XLR-type connector to Model 200-Series Announcer's Consoles. Provides support for headsets that use a 7-pin plug for mic and dual earpiece connections. Installs in one of the back-panel ...

Usually ships in 7-14 business days.
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Our Price:$55.69List Price: $56.00

6-Pin Headset Connector AssemblyStudio Technologies 13595 6-Pin Headset Connector Assembly

The 13595 6-pin headset connector assembly allows the technician to easily add a 6-pin female XLR-type connector (Switchcraft pin arrangement) to Model 200-Series Announcer's Consoles. It provides support for headsets that use 6-pin plug ...

Usually ships in 7-14 business days.
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Our Price:$55.69List Price: $56.00

Direct Microphone Output Card KitStudio Technologies 31058 Direct Microphone Output Card Kit

The 31058 Direct Microphone Output Card Kit allows a technician to add direct microphone output to Models 212, 220, 230 and 223 Announcer's Consoles. Installs in back-panel spare connector location. The card features 3-pin male XLR-type ...

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Our Price:$51.71List Price: $52.00

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