N-AUDIO HA400 Headphone amplifier 4 channel

HeadAMP - Four Output Stereo Headphone Amp Overview

Most home recordings involve from one to four people, any or all of whom are
going to need headphone monitoring. The monitor amp would be connected
to the tape deck?s headphone output or a mixer output so that the performers
can hear themselves and each other. Of course the same application can apply
to band rehearsals and even home entertainment. HeadAMP provides amplification
and individual volume control for up to 4 headsets. It can be driven by either line-
level or headphone amplifier signals (mono or stereo).

HeadAMP - Four Output Stereo Headphone Amp Specifications:

Signal To Noise Ratio >90dB
IMD (SMPTE) 0.01%
Maximum Input Level +14dBV
Maximum Output Level 20dB per channel
Output Impedance 51 Ohms per channel
Output Connectors Four stereo 1/4? headphone outputs
Power Requirements 12V DC (Adapter included) 
Total Harmonic Distortion

MyMONITOR - Personal Headphone Monitor Mixer Overview

Problem: A performer needs to hear him/herself through headphones exclusively or mixed
with the output of a mixer, CD player, tape deck, or other stereo line level source. Only the
mic signal, however, should be going to the main mixer.
Solution: Connect MyMONITOR between the mic and line source, and the mixer. The Mic
and line Monitor levels can then be adjusted for mix and volume through the headphones.
Only the mic signal will go to the board. And since MyMONITOR can be AC or battery powered,
the unit can be used on a large stage or wherever there is no AC outlet nearby. Dynamic or
condenser mics can be used since phantom power would come through the Mic Thru jack from
the mixer or other source.

MyMONITOR - Personal Headphone Monitor Mixer Specifications:

Signal To Noise Ratio 90dB
Gain 15dB (1/4 in), 50dB (XLR)
Maximum Input Level -20dB mic, 40dB Monitor
Output Impedance 10 ohms
Power Requirements 12V DC (Adapter included) or one 9V battery
Phantom Power ON/OFF switch
Power LED indicator
Dimensions 4.5x2.75x1.5 inches (112mm x 72mm x 40mm)
Weight 1.3lb (590g)

• All-passive volume control circuit
• Stereo and AUX inputs
• Dual outputs
• Additional mono output
• Balanced and unbalanced connection
• Integrated high quality headphone amplifier
• Mono, mute and PFL switches
• Stereo volume, AUX and headphone level controls
• Elegant design with solid wood side panels
• Built to last

Plug In, Rock Out with the Joe Satriani amPlug headphone amp

The Joe Satriani signature model is the latest addition to our incredibly popular amPlug series of headphone guitar amps!

• Joe's signature lead tone with your choice of delay on or off

• Distortion tone with superb dynamic response, inspired by the Satchurator

• Analog-style delay with Joe's filter & EQ, inherited from the Time Machine

• Plugs straight into your electric guitar, so you can instantly enjoy great sound through your headphones

• Convenient and portable with up to 11 hours of battery operation

• AUX input jack lets you jam along to tunes on your CD/MP3 player

The amPlug series of palm-sized headphone guitar amps make it easy to enjoy great guitar/bass sounds at home, in your room, or anywhere. This lineup is now joined by the amPlug Joe Satriani signature model, which borrows freely from the VOX/Joe Satriani line of signature pedal effects.

• Power supply: AAA batteries (x 2)

• Battery life (FX on):
  Zinc-carbon batteries: approximately 3 hours
  Alkaline batteries: approximately 11 hours

• Dimensions (W x D x H): 86 x 80 x 31mm/3.39" x 3.15" x 1.22"

• Weight: 40 g/1.41 oz. (not including batteries)

• Included items: Two AAA batteries (for verifying operation)