TRU Technology Amplifiers

Steele Series

- Full-Range Class AB Amplifiers
- Dual-Stereo / Dual-Mono Design (S44)
- S44 offers dedicated 4CH / 3CH or Dual-Mono configuration for the Ultimate Flexibility in System Integrity
- In 3CH Configuration, 1st Power Supply is dedicated to Mid/High. Then 2nd Power Supply
is dedicated to Bass only, preventing Mids to crash
- S500: Full-Range Class AB Mono Block can be used as a
traditional Bass Amplifier or use (2) S500 for the Ultimate front staging
- 1,000+ Watts of Output Devices
- Heatsink: Centrally Locating it on the PC Board
reduced EMI and further Isolating Noise from entering the Audio Section of the Amplifier
- 2 oz. Double-Sided “Plated Hole” Epoxy PC Board
- Unregulated PWM Power Supply
- Bi-Polar Audio Output Design
- Discrete Amplifier circuitry
- 100% Anodized Aluminum Housing
- Machined Screws / PEM® Nuts used to further increase Structural Integrity
- 1% Metal Film Resistors
- (16) TO-3P audio Output Transistors
- (8) I.R.® 98Amp rated Power Inverter for Efficiency
- Dual sets of 200 Volt High-Speed Rectifier Diodes
- (8) 2,200mf Capacitors on Rails
- (6) 2,200mf Input Capacitors
- 12dB Hi/Low pass filter (35Hz ~ 350Hz)
- (1) 80mm SilenX® Intake Fan (S44)
- (2) 80mm SilenX® Intake Fan (S500)
- Internal Heatsink (CNC Machined / Serrated Fins)
- Variable Low Frequency Boost Circuit
- Optional Remote Bass control knob
- 4 Gauge Power/Ground Input
- 8 Gauge Speaker Wire Output
- Made and Fully Assembled in California, U.S.A.
 

Billet Series

Research & Development  100% U.S.A
Heatsink: Extrusion, CNC Machine work  100% U.S.A
Blank P.C. Board  100% U.S.A
P.C. Board: Assembly & Final Assembly 100% U.S.A
Final Quality Control  100% U.S.A
Packaging  100% U.S.A
Parts  U.S.A., Mexico, Europe, & Asia 


EXCESSIVE SOUND, POWER & DYNAMIC HEADROOM

 - Extreme Broad range Class AB Amplifiers
- Absolute 100% QC conducted on all Amplifiers
- 100% USA Made is the byproduct of our QC in which no other company can claim
- Pre-Amp bypass “on the fly” feature offers direct input signal into the Output stage of the amplifier creating purest of the pure form of audio reproduction
- (8) ON® TO-3 Metal Case Output Devices for optimal performance & reliability
- (8) IR® 98 Amp rated Switching Devices for Efficiency
- Largest Power/Reserve Supply in its Class
- 1,000 Watt Power Supply
- 3-Piece separate “Plated Thru-Hole” PC Boards
-Main PC Board (4-Layer 2oz.)
-Pre-Amp PC Board (Removable 2-Layer 1oz.)
PWM PC Board (2-Layer 1oz.)
- Removeable “Plug-N-Play” Pre-Amp PC Board for future Upgrade offers custom tailored Sound Quality
- 3M® and molex®are used to connect all 3 PC Boards together to further retain uncompromised Audio Signal & Power Flow
- Power section uses discrete circuitry throughout audio path
- Constant Rated RMS Power Output until Thermal Shutdown
- High Current Unregulated Bi-Polar Design
- CNC Machined Heatsink
- Dual differential pairs of complimentary Input Transistors
- 1% Metal film Resistors
- (4) 63Volt 2,700µf Capacitor Bank
- Dual sets of High-Speed Rectifier Diodes
- Dual Hand Wound Power Transformers
- Symmetrically mounted heat generating parts
- 12dB Hi/Low pass X-over (50Hz ~ 500Hz)
- 1 Band Quasi-Parametric Bass EQ with variable Bass Boost
- Remote Bass Control (optional)
- 4 Gauge Power/Ground Input
- 8 Gauge Speaker Wire Output
 

Copper Series

audiophile grade

- World’s First Dedicated Modular Amplifier
- Based on on a single Amplifier, 3 Different types of
Pre-Amps can be used based on personal preference
and system application:

 

 - C74HT MKII version utilizing Sub-Miniature Tubes
::Sub-Minature Tubes used to minimize Microphonics
::4 Individual Tubes dedicated for individual Channels
::100+ Plate Voltage to Maximize Tubes Sound Quality
::200+ Tube Supply Voltage
::Golden Aero Pre-Amp Tube

 

- C74SS MKII version utilizing Solid-State Op-Amps
::Pair of Burr-Brown® Op-Amp

- C74DS MKII version utilizing Direct Signal Input
::No Pre-Amp Gain or Potentiometers
::Pure Audio Signal Input to the Amplifier



- Common characteristics
- 4-Layer PC Board
- Full Range Class AB
- Bi-Polar Output Devices
- Hand Matched TO-3 Output Devices (Beta-Curved)
- CAT5 (RJ45) Alternative to RCA Input Signal
- 100% Copper Plating
- Hand Built In-house
- Kimber Kable® Speaker Wires
- Largest Power/Reserve Supply in its Class
- High Current Unregulated Power Supply
- (16) I.R.® HEXFET® Power Inverter Devices for Efficiency
- (16) High Current TO-3 ON® Output Devices
- (2) Hand Wound Power Transformer
- (1) Hand Wound Power Transformer for Tube
- (4) individual Input Gain controls
- (4) Thermally Variable-speed Fans to cool heatsink
- 1% tolerance Non-Inductive Metal film Resistors
- WIMA® Polypropylene and Mylar Capacitors
- OS-CON® Capacitors
- Caddock® TO-126 Power Resistors
- Handmade in California, U.S.A.