The Bogen Gold Seal Series amplifiers were designed with the sound contractor in mind. They provide extensive flexibility and versatility, without the need for add-on modules. The GS250 model enhances the Gold Seal Series line with 250 watts of power in the same 2 rack space package as the other Gold Seal Series amplifiers. 4 Dedicated MIC inputs 1 Selectable MIC/TEL input 1 Selectable MIC/AUX input 1 Dedicated AUX input 4-Ohm direct coupled output 8-Ohm, 25V, 25VCT, and 70V transformer-coupled outputs Rack mountable 2RU package Dual-function 10-band graphic equalizer (Acoustic EQ or Feedback Control modes) True loudness contour function Audio Enhancement circuit for improved intelligibility Switchable phantom power (per MIC input) Variable AUX input muting Remote master volume control capability Automatic level control Input muting via contact closure on all inputs Voice-activated AUX muting on TEL input AUX fade-back after TEL page Pre-amp OUT/Power amp IN (insert) connections Booster amp output connection Tape output connection Balanced line driver output (using WMT1A accessory) Low-cut filter for MIC channels 3-Speed fan cooling Thermal and overload protection Listed to UL Standard 60065 for U.S. and Canada Tamper-resistant front cover (GSTRC)?available Rack mounting kit (GSRPK) available Remote volume control (GSRVC)?available