Little Dot MK I+ Portable Headphone Amp 2 channel Amplifier

Little Dot MK I+ Portable Headphone Amplifier

The successor to the Little Dot MK I, the new Little Dot MK I+ takes advantage of American National Semiconductors newest offerings in ultra-low distortion circuit components: LME49710HA high fidelity operational amplifier and the LME49600 high performance current buffer.  The new power supply consists of two 3.7V 700mA/h Lithium-Ion battery to provide up to 30 hours of high current, ultra-low distortion power to your headphones.  Circuit stability and reliability over the previous Little Dot MK I has been markedly improved as well.  The Little Dot MK I+ also has exceptional compatibility with a wide variety of IEMs, earphones, and full-sized headphones due to its user-selectable three gain settings, as well as output current control via internal jumpers.  When jumper caps are set in place, output current increases by 80%, dramatically improving dynamics, impact, and low frequency response with the trade-off of lower battery life.

Note: There are two versions of the Little Dot MK I+, the Normal version and the Gold version.  The normal version has a plastic housing and uses the LM4562 op-amp in the pre-amplifier stage.  The Gold version has a metal chassis and uses dual LME49710HA op-amps in the pre-amplifier stage.  This listing is for the Gold Version.

Little Dot MK I+ Technical Specifications:

• Line Input: 3.5mm (1/8") mini-stereo
• Headphone Output: 3.5mm (1/8") mini-stereo
• Frequency Response: 5 Hz (-0.6dB) to 200KHz (-0.3db)
• THD+N: 0.0010% (1V @ 1000 Hz)
• Suitable Headphone Impedance: 8 - 300 ohms
• Input Impedance: 20K ohms
• Power Output: 200mW (32 ohms)
• Gain Factor: 1, 2, 4x (User Selectable)
• Battery Life: up to 30 hours per charge
• Battery Overcharge Protection
• Universal Voltage AC Charger/Adapter included (Type B plug)
  
• Measurements:
• Metric: 95 mm (length) by 70 mm (width) by 24 mm (height)
• English: 3.74 inches (length) by 2.75 inches (width) by 0.94 inches (height)
• Weight: 192 g (includes internal battery)
• 1 Year Little Dot Warranty