Portable, Mobile and Low Power Drive Modules

The product of over a year of dedicated research and development, and designed expressly for mobile Hi-Res 
Audio reproduction where low power consumption and compact designs are essential, Warwick’s HPEL Portable Drive Electronics Modules are the optimum solution for driving our state-of-the-art High-Precision Electrostatic Laminate (HPEL) transducers in any low power, mobile or portable application.

Warwick Audio Technologies has developed these drive electronics in the form of miniaturised “daughter-board” modules that provide a turn-key solution for a multitude of audio products, including:

Warwick’s HPEL Portable Drive Electronics Modules are meant to be driven from a standard low voltage DC power source or batteries, and integrated within premium portable, mobile or low power products.

Warwick HPEL Portable Drive Electronics Modules are supplied exclusively by Warwick Audio Technologies Ltd. and are available to OEMs and ODMs for licensing in a range of headphone and loudspeaker products.

The design and specifications of HPEL Portable Drive Electronics Modules are subject to change at any time by Warwick Audio Technologies Ltd.

  • Analog amplification and power supply solution for low power applications
  • Discrete amplifiers are optimised to drive HPELs
  • Miniaturised size and flexible configuration enable integration in nearly any small form-factor, mobile and portable design
  • Can be configured as mono, stereo or multi-channel, with or without power supply
  • Powered by standard 3.7 VDC lithium polymer rechargeable battery or similar DC voltage
  • Ultra-efficient design draws < 250 mW in typical use (stereo headphone applications)
  • 8+ hours life from 500 mAh battery (stereo headphone applications)
  • Analog inputs – configurable to match any low level input source
  • Excellent audio performance – very low noise and distortion
  • Includes power supply module for generating high voltages
  • Layout optimized for superior high resolution audio performance
  • Multi-band parametric EQ for sound optimisation and customisation available for running in external DSP
  • Distortion reduction pre-processing algorithm available for running in external DSP
  • Meets North American, European and Asian regulatory compliance for EMC, safety and environmental certification

Warwick Audio Technologies’ HPEL Portable Electronics Modules have been designed to deliver outstanding audio performance in all key areas required for accurately reproducing Hi Res Audio: wide bandwidth, wide dynamic range, low noise and distortion and requisite time domain fidelity.

Warwick has managed to achieve this level of audio performance despite the challenging design constraints of extreme miniaturisation, ultra-low power consumption and modest cost. Patents are pending on the novel topologies and proprietary technologies developed.

Analog Input

850 mVrms full scale, typical

Amplifier/Energizer

Discrete, single-ended, Class AB output

Bias Voltage

1350 VDC

Maximum Output

145 Vrms

Distortion + Noise

< 0.05%


Bandwidth

> 65 kHz


Power Draw

30 mA at 4.1 VDC typical per channel


Power Supply

Module generates all required voltage rails from 3.5 – 5.0 VDC source

Dimensions

~ 23 mm (L) x 23 mm (W) x 3.5 – 5.5 mm (H) per module, configurable

The design and specifications of HPEL Portable Drive Electronics Modules are subject to change at any time by Warwick Audio Technologies Ltd.

Warwick HPEL Portable Drive Electronics Modules are supplied exclusively by Warwick Audio Technologies Ltd. and are available to OEMs and ODMs for licensing in a range of headphone and loudspeaker products.

HPEL Portable Drive Electronics Modules can be customized as follows:

  • Stereo or mono amplifier configuration
  • Analog input can be tailored for a wide range of input voltages
  • Separate or integrated power supply drives one or two channels
  • Option to mount amplifiers on HPEL transducer frame (mono configuration) or remotely
  • Distortion reduction pre-processing and multi-band parametric EQ options for external DSP