Theta Digital Enterprise Mono Amplifiers

Little brother to the Theta Digital Citadel, the Enterprise delivers a conservative 300 W to 8 Ohms and 500 W to 4 Ohms. I used them to power a pair of Apogee Diva Ultimates. The Enterprise mono-blocks are in immaculate condition both sonically and cosmetically. 
I am rating at 8/10 as I am the second owner. They have served me well, and as evidenced in the provided images, I have taken excellent care of them. Shipping for these amps will be at 60 lbs each and shipped in individual boxes (see images). Please ask for a shipping quote. 
Included in the sale are two Theta Digital mono amplifiers (as pictured) in original boxes with manuals and power cord.

Specifications:
Analog Audio Inputs

• 1 Single-ended RCA jack.
  
  


• 1 Balanced (XLR) jack.
  
  

Input Impedance

• 50KOhm. Single-Ended or Balanced, for each phase.
  
  

Input sensitivity

• (Single-Ended) 2.8V RMS input for 300W into 8 ohms.
  
  


• (Balanced) 1.4V RMS input for 300W into 8 ohms. 
  
  

Gain

• (Single-Ended) 25dB (18x).
  
  


• (Balanced) 31dB (36x).
  
  

Polarity

• (Single-Ended) Non-Inverting.
  
  


• (Balanced) Pin-2 = Positive, Pin-3 = Negative for Non-Inverting Output.
  
  

Analog Audio Outputs

• 1 balanced output (Cardas Type standard)
  
  

I / O RS232

• 1 DB9 and 1 RJ45 connector.
  
  

Modes/Processes

• Standby: Amplifier is muted and output bias is reduced to 10%.
  
  


• Thermal: Channel has overheated; amp automatically switches to Standby.
  
  

Power Output

• (8 ohms) 300 W (rated) 350 W (typical)
  
  


• (4 ohms) 500 W (rated) 525 W (typical)
  
  

Frequency Response

• (-3dB points @ full power) 0.5 Hz - 400 KHz.
  
  

• <1.75%
  
  

Signal to Noise Ratio

• (unweighted) >105dB

Power Requirements

• 117 VAC, 10A Slo Blo main fuse, 230 VAC, 6A Slo Blo main fuse, 50-60 Hz.
  
  

Power Consumption

• 30W @ Standby; 53W @ idle; 525W @ full power into 8 Ohms; 925W @ 4 ohms.
  
  

Trigger Input

• 5-12 VDC Pulse between 1 and 500mS.
  
  

Dimensions

• 9 1/16" W x 13 7/8" H x 23 5/8" D (230 x 346 x 600 mm)
  
  

Weight

• 51 Lbs. Stand alone (19 Kg)
  
  


• 60 Lbs. Boxed with accessories (22.4 Kg)
  
  

Maxumium Operating Temperature

• Internal: 176° F (80° C)
  
  


• Room: 131° F (55° C)