Power supply: AC 100V, 50/60Hz DC 26.4V (24V battery, hot earth)
Current consumption: DC 2.5A
Rated output: 30W
Output load impedance: 330Ω (100V line) 170Ω (70V line), Balanced
Frequency response: 100Hz～10kHz ±3dB (at 10dB rated output)
Inputs: Main MIC: -62dBV 600Ω, Balanced, MIC 1～3: -62dBV 600Ω, Balanced, LINE 1～2: -22dBV 10kΩ, Unbalanced
Speaker output circuit: 5-circuits (2 line system) with All-Call switch, Talk Back for Speaker 1～3 and Monitor circuit
Dimensions: 420 x 143 x 333 mm
Mass: Approx. 10kg
Specifications:
https://www.unipex.co.jp/seihin/download/pdfdata_en/TT30.pdf