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STAGE Music System

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What Hi-Fi? Sound and Vision have given the STAGE 5/5 Stars in their latest magazine - August 2014

STAGE System includes:

STAGE Control Centre (with an asynchronous USB DAC, an analogue preamplifier and a 70 wpc linear analogue power amplifier, STAGE Speaker System, remote control handset, 3.0M set of high quality speaker cable and mains cable.

STAGE Control Centre


The STAGE Control Centre and companion STAGE Speaker System, form a complete audio system of extraordinary fidelity.  STAGE will satisfy any level of expectation, as it is focused on achieving vanishingly low levels of distortion along with perfect tonality - all at a price point that has never before been achieved.


STAGE includes the capabilities of an asynchronous USB DAC, an analogue preamplifier and a linear analogue power amplifier.


The Control Centre was designed as an updatable platform with field replaceable modules, accommodating different applications and connectivity.  With both an asynchronous USB interface and pure analogue, STAGE can be used with a large variety of signal sources, providing each with the optimum signal path.  By simply exchanging the input module for a different one, STAGE gains new capabilities (such as wireless USB), this flexibility allows STAGE to accommodate additional future system requirements.


With analogue signal processing which perfectly compliments the requirements of the speaker system, the frequency response is extended along with distortion being reduced.  Designed with the goal of absolute purity as the highest criteria, the control centre utilizes the most well recognized technologies including an asynchronous transfer protocol digital converter, digitally controlled analogue attenuation, linear signal processing, analogue power amplification and linear power supplies, all contained in a compact package with a simple and intuitive user interface.  Together, these elements make STAGE the perfect audio system for desktop, gaming, home audio/video systems, professional audio mixing, mastering and commercial installations.


STAGE Speaker System


The design of STAGE Speaker System started as a blank canvas.  Every element of every aspect of the Speaker System was designed and tooled from the ground up. Not being tied to components designed for other applications and free to explore each and every element, this freedom allowed HRT to develop a Speaker System that exceeds what has previously been possible.  Each component has been optimized for the task and the overall system goal of vanishing low distortion has been the driving motivation for each decision.  Extensive use of injection molded structures have made possible shapes that would otherwise be impossible.  Details such as frames for the woofers, acoustical chamber for the tweeter, internal bulk head bracing of the enclosure are all become a reality by the three dimensional freedom molded structures allow.


Not to be out done by the structural elements, the magnetic design of STAGE Speaker System driver is the finest possible.  Instead of the common over-hung approach, both the woofer and tweeter used in STAGE Speaker System are under-hung and include modulation reducing magnetic shorting rings.  Even the voice coil impedance is unique, allowing for a parallel connected trio of woofers, due to their atypical high impedance.  This configuration allows for the best low frequency damping when combined with the dedicated electronics of the Control Center.  When combined with the unique shape of the enclosure, and distributed woofer array, STAGE Speaker system is perfectly balanced for both near field and free space listening.  With low frequency capabilities that exceed all expectations, STAGE Speaker System is capable of playing all types of music and soundtracks with unprecedented realism.  HRT’s exacting use of the most appropriate materials, the highest performance components and the most advanced manufacturing technologies, combined with absolute focus on sonic fidelity complete STAGE – the unique and unrivalled audio system solution that is here to be enjoyed by all.


Prepare to have your expectations exceeded!!!


Specification - Control Centre  
Sample Rate up to 96 kHz
Bit Depth up to 24 bit
USB transfer protocol asynchronous
Jitter contribution (DC to 30 kHz) >130 dB below full scale
Preamplifier & attenuator  
Line input impedance 20k Ohm
Attenuator step size .5 dB
LF output impedance 500 Ohm
Power Amplifier  
Class of operation AB
Maximum power output 70 Watts / channel
Frequency response +0 dB / -.2 dB
Power requirements  
Mains 115/230 VAC 50/60 Hz 220 VA
USB 250 mA
(H x W x D) 8.5” x 6.25” x 8”
Weight 8.5 pounds
Specification - Speaker System  
Impedance (minimum) 7 Ohm
Impedance (maximum) 39 Ohm
Crossover 2.8 kHz (2nd order)
Sensitivity 84.5 dB @ 1 meter w/ 2.83 V
Distortion >.3% @ 90 dB SPL
Power handling (system) 100 Watts
Frequency Response (45 Hz - 20 kHz)  +/- 2 dB (w/ Control Center)
Tweeter 1x 28 mm
Woofer 3x 70 mm
Voice Coil (diameter) 25.5 mm 4 layer, Kapton former
Magnetic structure (T & W) Under-hung, with shorting ring
Alignment B4 (+ 4th order electrical HP)
Vent 38 mm rear facing (with flared terminations)
Dimensions (envelope H x W x D) 15” x 6.25” x 7.25”
Weight (each) 9.4 pounds
Mounting bracket 2x M6 inserts (60mm on center)
Input connector 2mm x 6.5mm coaxial