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PROMETHEUS

STATEMENT MONO BLOCS

A collaboration between Dave Reich, Theta Digital’s chief engineer and Bruno Putzeys, class D “Wonderkind” of Hypex fame, Prometheus marks a fundamental departure in our amplifier philosophy. Rather than design amplifiers that highlight the amp/speaker interface and demand careful consideration when choosing the corresponding transducer, Prometheus is completely load agnostic.The frequency response is load invariant. Harmonic distortion, at less than 0.01% at 500 watts RMS full-band at 4 ohms is virtually non-existent. The same is true for IMD.

“First Watt” advocates will happily note THD+N at one watt is lower by a factor of 10: < 0.001%. Notable also is the fact that Prometheus shares with its other N-Core 1200 brethren the lowest output impedance (and highest damping factor) of any amplifier every built. To say that Prometheus exerts the iron-hand of speaker control is a masterpiece of understatement.

In true Theta Digital tradition, Reich and cohorts researched virtually every possible power source before settling on a huge linear supply. For proof, one need only look at the immense 1.44kva toroidal power transformer. Such a dramatic power source insures that Prometheus can deliver full output for any desired duration. All day and all night? No problem.

Parts quality continues in adherence to strict Theta hierarchy. Use only the best parts: Check. Use them the right way: Check. Make the amplifier absolutely beautiful both inside and out: Check.

In Greek mythology, Prometheus stole fire from the gods and gave it to mankind. In our Theta Digital mythology, Reich and Putzeys stole amplifier perfection from the gods and gave it to music lovers everywhere.


SPECIFICATIONS : 

ANALOG AUDIO INPUTS : 1 RCA (SINGLE-ENDED), 1 XLR (BALANCED)

​INPUT IMPEDANCE : 47 kOhms, Single-Ended or Balanced, for each phase

​INPUT SENSITIVITY : 1.825V RMS input for 250W into 8 ohms.

GAIN : 27.8 dB

POLARITY : SINGLE-ENDED - NON-INVERTING

                     BALANCED - PIN 2 = POSITIVE, PIN 3 - NEGATIVE FOR NON-INVERTING OUTPUT

​2 BALANED OUTPUTS : CARDAS TYPE STANDARD, BI-WIRING SUITABLE


POWER OUTPUT : 8Ω: 250 W RMS with less than 0.01% THD, 20 Hz to 20 kHz; 300W RMS with                                    less than 0.2% THD, 20 Hz-20 kHz; 350 W RMS with less that 1.0% THD at 1                                    kHz; 395 W RMS with less than 1% THD, 1 kHz, Burst mode

                               
                                4 Ω
: 500 W RMS with less than 0.01% THD, 20 Hz to 20 kHz; 600 W RMS with                                  less than 1.0% THD, 20 Hz to 20 kHz, 8 ohms; 800 W RMS with less than 1%                                    THD, 1 kHz, Burst mode


                                 2 Ω: 850W RMS with less than 0.01% THD from 20 Hz to 20 kHz; 950W RMS                                     with less than 1.0% THD, 20 Hz to 20 kHz


FREQUENCY RESPONSE : +0, -0.5, 0Hz TO 20kHz; load independent

SIGNAL TO NOISE RATIO : 124 dB REFERENCE TO RATED OUTPUT (A-WEIGHTED)

​DIMENSIONS : 9 1/16” W x 13 7/8” H x 20” D (230 x 346 x 508 mm)

​WEIGHT : 54.5 lbs. (stand alone) 

THETA DIGITAL

Theta Digital designs and manufacturers state­-of-­the-­art audio components in its facility in Montebello, CA. With impeccable style, world­-class cosmetic designs and leading­-edge audio circuitry, Theta Digital components are a fitting accompaniment for the finest possible audio and video systems.

Since their inception in 1986, Theta Digital has built a reputation for designing some of the best digital to analog converters, and their upgradable and customisable designs like in the performance­ unparalleled processor, the Casablanca IVa, to their Dreadnaught Amplifiers, which allows a
custom configuration very aligned with tritone's approach, in top-­notch quality and design. 

GENERATION VIII

STATEMENT 2-CHANNEL PRE-AMPLIFIER / DIGITAL TO ANALOG CONVERTER

The Generation VIII Series 3 delivers the most accurate, defined, natural sound that digital technology offers. It represents over twenty years of Theta Digital’s tireless research and development in D / A converter design, and achieves the highest levels of sonic performance possible in a product category that Theta pioneered: the external DAC.

The G8S3 is a full differential, true balanced DAC preamp featuring custom-designed software-programmable digital filters feeding into two digital-to-analog converters per channel, one for each phase angle


Here are some highlights:

  • 24 bit / 192 KHz digital to analog converter
  • Up to 132 dB dynamic range (a 15 dB improvement over the original Generation VIII)
  • Over 3X differential output current
  • Stop-band attenuation of 130 dB (a 48 dB improvement over the original Generation VIII)
  • Pass-band ripple ±0.00001 dB (a 200X improvement over the original Generation VIII)
  • Fully differential DAC follower op-amp with 150 MHz bandwidth (a 70 MHz improvement over the original Generation VIII)
  • Four new discrete analog, digitally controlled volume cards with zero offset nulling
  • New input card now accepts 176.4 kHz and 192 kHz signals 
  • >120dB Signal to Noise Ratio, A-Weighted
  • ​THD: Less than 0.0007% (Digital), 0.0005% (Analog) @ 1KHz, at 3V output level.
  • ​Frequency Response: 20 Hz-20 kHz, ± 0.01 dB, Ref. 1KHz.
  • ​Proprietary switch resistor volume control in the analog domain

PRE-AMPLIFIER / PROCESSOR

CASABLANCA IVa

STATEMENT MUSIC & CINEMA PROCESSOR-PREAMPLIFIER

The Casablanca IVa now offers immersive audio. Playback of Dolby Atmos and DTS X material is fully realized with the Casablanca IVA. Since 1996, continuous upgrades have maintained our vision of a reference-worthy multi-channel audio processor with audiophile performance, come-hither cosmetics and world-class usability and maintained essential contemporary features.


The 2012 revision to the III HD brought a new, Dave Reich designed power supply with HDMI HDR and lossless audio decoding. Today’s upgrade to the Casablanca IVa brings full 4k HDMI HDR with HDMI 2.0 compatible inputs with HDCP 2.2 and includes full HDR capability using state-of-the-art audio bandwidth to 192 kHz, increases DSP processing power by a factor of 10, adds world-class digital room correction and optimization from Dirac Live operating at a world-leading 96 kHz and our novel Jitter Jail II to fix insidious timing errors especially inherent in HDMI HDR audio signals.


Only Theta Digital has offered such quality and long-term value in this ever-changing product category. Operational control is improved in the Casablanca IV. Not only can it be easily controlled by its front panel buttons, or via standard IR remote control, or, for the ultimate in system control, by its powerful RS-232 protocol which interfaces with complete home automation systems from companies such as RTI, Crestron, Savant and (soon) Control 4, remote operation is now possible from a new range of devices including iPad, iOS and Android devices.

DREADNAUGHT D

CONFIGURABLE POWER AMPLIFIER

Adding the letter “D” to our Dreadnaught modular multi-channel amplifier model serves dual purposes. “D” is not only the 4th letter of the alphabet, it is also the amplifier class used in our new masterwork.

The Dreadnaught D brings the world-class performance or Theta Digital’s Prometheus monoblock amplifiers to users who require the finest multi-channel performance plus world-class flexibility.


SPECIFICATIONS : 

ANALOG AUDIO INPUTS : 1 RCA (SINGLE-ENDED), 1 XLR (BALANCED) PER CHANNEL

​INPUT IMPEDANCE : 47 kOhms, Single-Ended or Balanced, for each phase

​INPUT SENSITIVITY : 1.825V RMS input for 225W into 8 ohms.

GAIN : 27.8 dB

POLARITY : SINGLE-ENDED - NON-INVERTING

                     BALANCED - PIN 2 = POSITIVE, PIN 3 - NEGATIVE FOR NON-INVERTING OUTPUT


POWER OUTPUT : MONO / STEREO MODULE

                               8 Ω: 225W RMS per channel with less than 0.05% THD from 20 Hz to 20 kHz

                               4 Ω: 375W RMS per channel with less than 0.05% THD from 20 Hz to 20 kHZ

                               2 Ω: 500W RMS per channel with less than 0.05% THD from 20 Hz to 20 kHz 

                               
                           
  MONO BRIDGED MODE

                              8 Ω: 500W RMS per channel with less than 0.05% THD from 20 Hz to 20 kHz 
                              4 Ω: 800W RMS per channel with less than 0.05% THD from 20 Hz to 20 kHZ 
                        

FREQUENCY RESPONSE : +0, -0.5, 0Hz TO 20kHz; load independent

SIGNAL TO NOISE RATIO : 120 dB REFERENCE TO RATED OUTPUT (A-WEIGHTED)

​DIMENSIONS : 17 5/8” x 7 15/16” x 19 ¾”; 448 mm x 202mm x 502 mm 

​WEIGHT : 98.5 lbs; 44.8 kG (Fully Loaded)

tritone

POWER AMPLIFIERS