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ELF 442M – are 4-channel digital BTE hearing aids with 4 adjustable listening programs; they are suitable to compensate mild, moderate and severe hearing loss.


  • WDRC (wide dynamic range compression) with amplification control for different levels of input signals, compression ratios and thresholds;
  • Adaptive AGC (automatic gain control) sets up a triggering threshold and adjusts its gain to achieve a constant signal level at the output effectively;
  • Active low-pass and high-pass filters increase the audibility of high-frequency and low-frequency acoustic information;
  • Low-level noise control function allows to control the degree of low-level ambient noise suppression and microphone noise reduction;
  • Adaptive function of acoustic feedback cancellation identifies adverse whistling tones and eliminates them before they start to distort listening experience;
  • Induction coil eliminates background noise and echo by sending the audio signal directly to the hearing aid without extra equipment or devices;
  • 4 autonomously adjustable listening programs;
  • 8-band graphic equalizer;
  • Acoustic (beep) indicator for switching listening programs;
  • Acoustic (beep) low battery indicator;
  • Direct audio input (DAI) allows an external source to be directly connected as an input that bypasses the microphone;
  • Compatible with cell phones, computers, etc. via Bluetooth devices with a hearing loop.


Maximum OSPL90 range, dB 128
Maximum sound amplification range, dB 61
Number of digital channels for signal processing 4
Number of available listening programs 4
Indicator for switching listening programs +
Low battery indicator +
Telecoil +
Adaptive function of sound feedback cancellation +
WDRC (wide dynamic range compression) +
AGCO (automatic gain control output) +
Low frequency noise control +
Active low-pass and high-pass filters +
Tinnitus-masker technology -
Audio input +
Adaptive wideband system of high-level noises reduction -


There are contraindications, it is necessary to consult a specialist