The STM2Z+ is a simple but versatile preamplifier, offering a multifunction solution for installations where multiple voice and music sources need to be mixed to two output zones. The stereo design with ten inputs allows connection for any type of audio source such as microphones, Bluetooth devices and various balanced or unbalanced line level audio sources.

Channel one to four are balanced inputs, allowing connection of microphone and line level audio sources. Channel 1 feature LINE/MIC, phantom power and talk over for priority announcement and Channel 2~ Channel 4 feature LINE/MIC and phantom power. The other inputs are three unbalanced stereo line inputs allowing connection of any line level audio sources.

An integrated Bluetooth receiver offers convenient wireless connection possibilities for mobile and portable devices including laptops, smartphones and tablets.

A front panel 3.5mm jack allows monitoring MONO or STEREO input signal with MONITOR level dial.

Two master volume controls for the outputs of MONO (1-MONO) and STEREO (2-MONO/STEREO) including Signal and Peak LED is located on the front panel, also accommodating each input mixing dial. 

Features

• Designed for the most common commercial installation requirements
• Ideal for background music, microphones, and paging with the ability to connect up to 10 external sources
• Front panel controls to easily manage source and master volumes for both the stereo and mono outputs
• 4 balanced mic/line each with switchable phantom power
• Paging Priority on channel 1
• 3 Stereo line inputs including Bluetooth
• Stereo and Mono outputs with independent rear panel EQ controls
• Dedicated Monitor control with balanced out  and Record Out
• Stereo outputs with additional Trim control for a total of 3 discrete Mono zones
• Euro/Phoenix connectors for quick trouble-free hookup
• 1U, rack-mounted, universal PSU w/removable IEC cord

Specifications

• Inputs
• Mic 1~4
• Type: Balanced
• Connector: 3-pin terminal block
• Sensitivity: -56dB
• Other
• Phantom power (15Vdc)
• Priority on Mic1
• Line 1~4
• Type: Balanced
• Connector: 3-pin terminal block
• Sensitivity: -18dB
• Other: Priority on Line 1
• CH5/6 ~ CH9/10
• Type Unbalanced stereo
• Connector Female RCA
• Sensitivity -22dB
• Outputs
• Stereo
• Type: Balanced
• Connector: 3-pin terminal block
• Other: 2 band EQ
• Mono
• Type: Balanced
• Connector: 3-pin terminal block
• Other: 2 band EQ
• Monitor
• Type: Balanced
• Connector: 3-pin terminal block
• Rec
• Type Unbalanced
• Connector: Female RCA
• Frequency response: 20Hz~20KHz
• Signal to Noise ratio: >90dB
• Total Harmonic Distortion + Noise: <0.05%
• Cross talk: >70dB
• Indicators
• ​Power
• Input Signal, PEAK
• Output Signal, PEAK
• Power supply type: Switching mode, 100VAC ~ 240VAC
• Power consumption: 12 W
• Dimensions: 1RU - 19” x 1.75” x 5.5” (483 x 44 x 139 mm)
• Weight: 5.73 lb. (2.6 kg)