Little Dot MK IV / MK IV SE Headphone Amplifier/Pre-Amp

The All-New Little Dot MK IV is our flagship headphone amplifier/pre-amplifier in the Little Dot MK-series.  Boasting a SEPP (OTL) in Class-A circuit design filled with high quality components such as an ALPS-27 potentiometer, Nichicon, Rubycon, and German WIMA/ERO capacitors, the Little Dot MK IV is truly our best effort yet.  Regardless of whether your headphones are 32 ohms or 600 ohms, the Little Dot MK IV can drive them easily with effortless dynamics (45Vp-p!) , subterranean bass, cavernous soundstage, and precise 3-D imaging. 

The Little Dot MK IV also adds in user-tweaking options such as two gain switches to delivery maximum compatibility with all your headphones, regardless of impedance or sensitivity.  Also available for the very first time in a Little Dot amplifier, is an internal jumper to allow use with a wider range of driver tube-rolling, including the EF92, CV131,  WE403A/B, GE5654, M8100, CV4010, EF95, 6JI as well as all equivalents, derivatives, and direct replacements to these vacuum tubes!

Technical Specifications:

• SEPP (Singled-ended Push Pull) OTL in Class-A
• Frequency response:   10 hz~100 Khz   (-1dB)
• THD+N: 0.1% (100 mW @ 300 ohm)
• Power Output:
• 500 mW @ 300/600 ohm
• 300 mW @ 120 ohm
• 100 mW @ 32 ohm 
• Power Consumption: 30W (228V x 0.133A)
• Variable Gain: 3,4,5, or 10x
• Recommended Load Impedance:   32 ohm~600 ohm
• Input Impedance: 50K ohms
• Pre-Amplifier Output Impedance: 600 ohms
• Pre-Amplifier Gain: 3-10x (also controlled via gain switches)
• Pre-Amplifier Voltage: 10V RMS
• Pre-Amplification circuit includes both driver and power tubes
• Driver Tubes: 2x JAN 5654 (MK IV) or 2x M8100 (MK IV SE)
• Power Tubes: 2x Soviet 6H30EH (MK IV) or 2x 6H30PI Gold-Pin (MK IV SE)
• High quality aluminum chassis
• Neutrik Headphone Jack (SE version only)
• American CMC/Van Den Hul RCA Jacks (SE version only)
• Dimensions (Metric): 275mm deep by 220mm wide by 143mm high
• Dimensions (English): 10.8 inches deep by 8.66 inches wide by 5.62 inches
• Weight: 3.5 Kg or 7.7 lbs
• 1 Year Little Dot Warranty