Theta DigitalEnterprise Mono BlocksusedTheta Digital Enterprise Mono Blocks 300 Watt Mono Amplifiers - Excellent Condition-1 Pair LeftI have the last pair of the Theta Digital Mono Enterprise Mono Blocks Available ! Price lowered today for quick sale !!! DONT WAIT !!! These are Silver and have the Dual Binding posts. A nic...4500.00

Theta Digital Enterprise Mono Blocks 300 Watt Mono Amplifiers - Excellent Condition-1 Pair Left

Listing ID: lis9ahj2 Classified 
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Time Left: 12 Days
New Retail Price: $12,000.00


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Ships fromTinton Falls , NJ, 07724
Ships toUnited States
Package dimensionsunspecified
Shipping carrierunspecified
Shipping costSpecified after purchase
Original accessoriesBox
Agon miniAverageResearch Pricing

I have the last pair of the Theta Digital Mono Enterprise Mono Blocks Available !    
Price lowered today for quick sale !!! DONT WAIT !!!   
These are Silver and have the Dual Binding posts. A nice option to have. 
These are in my business partners house and he just replaced them with the Theta Prometheus Mono Blocks.      
He has enjoyed these and kept them in amazing condition as you see in the pics.

We have all the original boxes!!

They are in perfect working condition and will bring you years of enjoyment. Smoke free and perfectly clean environment..

We are Theta's Largest Dealer worldwide and you can check my feedback or just google me to see who we are..    

We are Theatermax and you can check out our website for all our brands. 

Feel free to call me anytime 11AM -10PM eastern time to discuss these items or any of the great items we represent.   



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These are 300-350 Watts at 8ohms and will deliver 525 Watts at 4ohms..  

The Enterprise is a 300 Watt monoblock power amplifier, based on the original Citadel and the Dreadnaught II. It benefits from the knowledge, research and dedication that Theta Digital brought to those superlative designs.

The heart of the Enterprise is its fully-balanced differential, zero-feedback circuitry, with meticulously selected solid-state devices throughout. We scrutinize the selection to optimize component parts in each and every stage, and for the performance of the amplifier as a whole.

The sound is similar to the original Citadel amps in veracity and intimacy with the musical experience, and in the prospect of movie performance that will make your home theater your favorite movie palace.

The audio board is a four layer glass-epoxy circuit board: one layer each for positive and negative supply lines, one layer for ground plane, and one layer for the signal path. Its transistors are the same ultra-fast devices that helped give the original Citadel and the Dreadnaught II their superlative sonic signature. The Enterprise uses the same bridge rectifier, mother board, and capacitive banks as the original Citadel did!

Its output power supply uses a single, high-current 480 Watt toroid transformer, which feeds an ultra-fast / soft-recovery 35 Amp full bridge rectifier. The power supply lines are then filtered by two capacitive banks totaling a hefty 80,000 uF. The sonic result of these very clean supply lines to the output transistors is exceeded only by the original Citadel on which it was modeled.

The Enterprise is an exercise in delivering tremendous power with absolute integrity.

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.


(Single-Ended) 25dB (18x).

(Balanced) 31dB (36x).


(Single-Ended) Non-Inverting.

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

Analog Audio Outputs

1 balanced output (Cardas Type standard)


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.



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.


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


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)

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