UltraSoundGate Player BL Pro

part # 70115 (single speaker), 70116 (dual speaker)

UltraSoundGate Player BL Pro is a full-featured ultrasound playback unit for luring bats. The system consists of an USB computer interface, D/A converter, power amplifier, speaker(s), tripod mount and playback software. The unit can be powered either entirely from the USB interface of the computer (bus-powered) or by an external 24…36 V battery in order produce maximum possible sound levels. It is available with either a single speaker (#70115) or two integrated speakers (#70116). The dual speaker version is certainly suited for luring bats into mist nets. An attachable eye allows to hang the unit on a mist net pole or a tree.

The comfortable playlist feature of the accompanying RECORDER USGH software allows to play both original, noise-reduced or fully synthesized bat calls in random order and at random intervals. A growing collection of European bat sounds that are suited for this purpose is available at www.batcalls.com.

USG Player BL Pro (single speaker version), front view

USG Player BL Pro 2 (dual speaker)

Number of channels 1
Resolution 8 or 16 bit
Sample rates [kHz] 1000 (8 bit only), 750(8 bit only), 500, 384, 375, 300, 250, 214, 192, 187.5, 166.6, 150, 125, 100. The bundled RECORDER USGH software provides a real-time oversampling option that allows to play .wav files with any sample rate below 500 kHz (including time-expanded recordings).
Output power 1.5 W (bus-powered) or 10 W (external 36 V power)
Max sound pressure level bus-powered: 100 dBSPL @ 10 cm (= 80 dBSPL @ 1 m)
external power (36 VDC): 120 dBSPL @ 10 cm (= 100 dBSPL @ 1 m)
Frequency range 1 … 125 kHz
Amplifier slew rate 8 V/µsec
Volume adjustment potentiometer yes
Trigger button no
Speaker output connector 1/4″ TS phone jack (single speaker version #70115),
speakON socket (dual speaker version #70116)
External power connector male XLR-4 socket (pin 1,2 : GND; pin 3,4: +12 … 36 V)
Physical USB connection B-type USB socket (or LEMO 1B on request)
Supply current 500 mA (drawn from the USB) or up to 1 A from an external 36 V supply voltage
Physical dimensions (W/H/D) 90 x 56 x 136 mm (single speaker version #70115)
90 x 60 x 190 mm (dual speaker version #70116)
Weight 400 g (single speaker version #70115)
600 g (dual speaker version #70116)
Included software Avisoft-RECORDER USGH
System requirements PC with at least an Intel Atom at 1 GHz, running Windows Vista/7/8/8.1/10/11

Functional principle of the UltraSoundGate Player BL Pro (#70115)

Functional principle of the UltraSoundGate Player BL Pro 2 with two internal speakers (#70116)

Frequency response of the built-in speaker

Available options / accessories for UltraSoundGate Player BL Pro

  • External unidirectional speaker (part #60108).
  • External omnidirectional speaker with 4 separate tweeters (part #60409).


Note that playing back (ultra)sounds in the field for attracting wild animals usually requires an official license or permit issued by the local nature conservation authorities!

Due to the potentailly extremely high sound levels (>120 dB) at close distances, keep away from the speaker or wear a hearing protector during playback!