This a VERY fine sounding example of vacuum tube technology! Especially with the high quality Siemens C3G and the NOS 6SN7 tubes.

NOTE: Please look closely at the pictures. Several of the protection rings have minor blemishes. Otherwise it is in excellent condition cosmetically and functionally.

Comes with the following:

Installed tubes -

2 x Electro-Harmonix 6H30PI power tubes

2 x Mullard M8100 / CV4010 driver tubes

Extra tubes -

4 x Siemens C3G (best preamp tube ever made, 2 have not been used)

2 x NOS GE and Sylvania 6SN7 output tubes

Tube socket adapters -

2 x 6SN7 adapter for power tubes

2 x C3G adapter for driver tubes

(these allow you to roll in the above tube types, the VERY BEST sounding tubes in this amp/pre, VERY accurate and detailed sound reproduction)

Neutrik headphone jack

CMC gold plated RCA

Description

The Little Dot MK IV 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

High quality aluminum chassis

Available in either 120VAC or 220VAC

https://littledotus.com/?product=mk-iv