Lab12 Integre4 MK2 tube integrated amplifier, handcrafted in Greece. Four KT-170 tubes deliver 2 x 75 W, with five RCA inputs, one XLR input and a headphone output.
The Integre4 MK2 leaves the factory with four KT-170 power pentodes, driven by four 6N1P dual triodes. It delivers 75 W per channel and is comfortable with speakers from 4 to 8 ohms. The circuit runs without feedback, and the dual mono topology was redesigned for this MK2 version.
The large OLED display shows the anode current of each power tube. Four trimmers below the screen set the bias, with no measuring instrument needed. The amplifier also accepts EL34, 6550, KT88, KT120 and KT150 tubes, following the value chart in the manual.
Volume runs through a motorised ALPS Blue Velvet potentiometer, also driven by the supplied remote control. A 6.3 mm headphone socket on the front uses the tubes and the output transformers. The speaker outputs switch off as soon as headphones are plugged in.
The rear panel gathers five unbalanced RCA inputs, one XLR input shared with input 1, and two pairs of speaker terminals. A soft start warms the tubes for about one minute. The 43 x 19 x 29 cm chassis weighs 22 kg and has a 5 mm aluminium front panel.
Data sheet
Specific References
Lab12 Knack mk2 1.5 m power cable with 16 A IEC connector, designed for the Noyra. Its 3 x 6 mm² conductors and braided copper shield aim for noise-free power delivery.
Lab12 Knack mk2 1.5 m power cable with 20 A IEC connector, designed for the Gordian. Its 3 x 6 mm² conductors and braided copper shield aim for noise-free power delivery.
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