Technical Specifications for the AC/USB Powered Boostaroo®
Here are the technical specifications for our Boostaroo products.
If you have further questions, check our FAQ page, or contact us.
Testing on the AC/USB Boostaroo was done by Tandy Manufacturing of Hong Kong, China.
AC & USB powered Boostaroo Audio Amplifier and Splitter
System Description:
The Boostaroo is an audio amplifier that separates the signal into individual stereo channels to drive 3 separate headsets or speakers. Depending on the ohm rating of your headphones, the Boostaroo will double the output of your player with less than a 1% harmonic distortion.
No difference in output or frequency response was observed when one headphone was plugged in or when 2 headphones were plugged in at the same time.
The input impedance was found to be approximately 500 ohms. The output impedance was approximately 1 ohm. Maximum power transfers occur with a 16 ohm load.
Frequency Response:
(EIAJCP-307 Method) 20 to 20,000 Hz ± 2dB
Impedance 5K ohms@1Khz
2.6 volt (RMS) max input for less than .3% distortion
Output: (32 ohm headphones) >40mW per channel
Power Requirements:
Power Requirements 5V DC/300mA (AC Power Supply and USB Cable Included)
Product Dimensions:
Dimensions (HWD) 13/8 x 51/8 x 1 in (35 x 130 x 25 mm)
Weight 2 oz (55 g)
Color: Smoked Gray Translucent Finish
Technical Specifications for the Boostaroo Revolution®
Testing on the Revolution was done by EarTek Svc. of Holland MI by James J. Welsh, M.A.
Revolution Audio Amplifier and Splitter
System Description:
The Revolution is an audio amplifier that separates the signal into individual stereo channels to drive two separate headsets or speakers, and images surround sound into 3 channels. Depending on the ohm rating of headphones, the Revolution will provide an 11.5 dB boost with no more than .3% harmonic distortion.
No difference in output or frequency response was observed when one headphone was plugged in or when 2 headphones were plugged in at the same time.
The input impedance was found to be approximately 500 ohms. The output impedance was approximately 1 ohm. Maximum power transfers occur with a 16 ohm load.
Frequency Response:
The Revolution employs similar output amplifiers to those found in CD players. Frequency response is equal to or exceeds specifications. Typical specifications are
20Hz to 20,000Khz +0/-3 dB
33Hz to 20Khz +0/-1dB (EIAJ CP-307 Method).
Output:
Up to 32 mW per channel, 2 channels driven
Distortion normally less than 1% with reasonable quality headphones.
Input:
Impedance 5K ohms@1Khz
2.6 volt (RMS) max input for less than 1% distortion
Input/Output:
11 - 11.5dB boost from CD player (acoustic)
Voltage gain: 11.5 dB boost
Power Requirements:
VDC minimum: Cutoff may be considered as 0.8 volts per cell. Two AAAA cells are required. Use of alkaline batteries is suggested for longer playing time. Also works with rechargeable batteries; nickel-metal hydride type preferred. Battery life estimated at 20 hours, depending on headphone impedance and sound level. Input must be unplugged when not in use to conserve battery life.
Product Dimensions:
Size: 4.3" x 0.875" x 0.832"
Weight: 3 oz for unit, 6 oz (170.10G) with 2 AAAA batteries
(Energizer E96 or equivalent)
Color: High Gloss White Finish
Technical Specifications for the Boostaroo®
Testing on the Boostaroo was done by EarTek Svc. of Holland MI by James J. Welsh, M.A.
Boostaroo Specifications
System Description:
The Boostaroo is an audio amplifier that separates the signal into individual stereo channels to drive 3 separate headsets or speakers. Depending on the ohm rating of your headphones, the Boostaroo will double the output of your player with no more than a 1% harmonic distortion.
No difference in output or frequency response was observed when one headphone was plugged in or when 3 headphones were plugged in at the same time. Signal to noise ratio was measured -95dBa from clipping level into a 33 ohm resistance. Distortion was measured just below the clipping level, at 0.3%, which is the residual distortion of the generator used.
The input impedance was found to be approximately 500 ohms. The output impedance was approximately 1 ohm. Maximum power transfers occur with a 32 ohm load.
Frequency Response:
The Boostaroo employs similar output amplifiers to those found in CD players. Frequency response is equal to or exceeds specifications. Typical specifications are 20 to 20,000Hz +/- 2 dB (EIAJ CP-307 Method).
Output (@ 3VDC):
Under 1% harmonic distortion.
- Into 8 ohm headphones - approximately 40 mW per channel, 12 dB gain in sound per
channel. Or 100% boost in loudness.
- Into 16 ohm headphones (stereo mini jack), approximately 40 mW per channel, 12 dB
gain in sound per channel.
- Into 25 ohm headphones: approximately 40 mW per channel, 11.1 dB gain in sound per channel.
- Into 32 ohm headphones: approximately 30 mW per channel, 10.9 dB gain in sound per channel.
- Into 64 ohm headphones: approximately 13.8 mW per channel, 10 dB gain in sound per channel.
Power Requirements:
3.0 VDC: Two size AA batteries are required. Use of alkaline batteries is suggested for longer playing time. Also works with rechargeable batteries; nickel-metal hydride type preferred.
Product Dimensions:
Size: 4.5" x 1.5" x 1.1" 11.43cm x 3.81cm x 2.79cm)
Weight: 3 oz for unit, 6 oz (170.10G) with 2 AA batteries.
Cord: 12 inches (30 cm)
Color: Smoke Gray (Translucent)
Boostaroo with 3-foot cord Specifications
System Description:
The Boostaroo® with 3-foot cord is identical to the Boostaroo Audio Amplifier and Splitter with the exception of the cord length.
Product Dimensions:
Size: 4.5" x 1.5" x 1.1" 11.43cm x 3.81cm x 2.79cm)
Weight: 3 oz for unit, 6 oz (170.10G) with 2 AA batteries.
Cord: 3' (91.4 cm)
Color: Clear (Translucent)
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