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Lamm Industries
ML 2.1 Mono Tube Power Amplifier

AED 55,000.00 (Inc. Tax)

(Price Per Pair)

Only 1 left in stock

Ships Next Business Day


ML2.1 is the direct replacement of the ML2 — the first in a line of LAMM single-ended amplifiers with a regulated power supply that represented a new generation of power amplifiers employing unique high current low impedance power vacuum tube triodes (6C33C) in both the output stage and voltage regulator.

Orders ship Sunday through Friday from our offices in Dubai, UAE.

In-stock products typically ship within 48 hours and should be expected to arrive in 3-4 business days. Orders outside of the UAE should be expected to arrive in 5-7 business days.

Pre-order and backorder products will state the approximate delivery timeline beside the Add To Cart button.

If you would like to place a custom order, chat with our specialists for a guided shopping experience. Once your order has been placed, a timeline will be provided depending on your order details.

- Free delivery within the UAE
- Shipping charges will be calculated upon checkout for orders outside of the UAE (Bahrain, Oman, Kuwait, Saudi Arabia & Qatar).
- Taxes and duties are calculated according to the applicable laws of the state or country an item is shipped to and are the customer's responsibility.

For additional information on shipping and our exchange & return policy visit our help center.

Installation charges are applicable and can be paid upon delivery for our clients based in Dubai.

- Installation Charges: AED 350 Per Hour
- Speaker Cables: AED 15 Per Meter
- Trunking: AED 10 Per Meter

For clients based outside of the UAE, please contact our specialists and we will share an estimate based on your requirements.


ML2.1 is the direct replacement of the ML2 -- the first in a line of LAMM single-ended amplifiers with a regulated power supply that represented a new generation of power amplifiers employing unique high current low impedance power vacuum tube triodes (6C33C) in both the output stage and voltage regulator. Implementation of these triodes has allowed to create an output transformer with a very low turns ratio and, as a consequence, extended (as compared even to the most advanced modern vacuum tube amplifiers) frequency decade factor, as well as dramatically reduced leakage inductance.
In Lamm's own words, the ML2.1 is like any single-ended amplifier, except in its execution. A key difference is the serious amount of regulation designed into the amp. When I first saw an ML2.1, at the Home Entertainment 2004 East show, I assumed it to be a single-ended amp using two output tubes in parallel. As it turns out, the second 6C33C tube per channel serves only as a voltage regulator for the first: Without it, fluctuations in the mains voltage could result in distortion and tube damage on the one hand, or less than optimal output power on the other.

The ML2.1's input stages, which comprise a 12AX7 dual triode for voltage gain and a Russian 6N6P driver tube, are also fully regulated—again, with tubes. Here, a 5651 voltage reference tube creates a reference signal from the input, and a 6AK5 miniature pentode continuously compares the output signal with the reference, and corrects the former as necessary by amplifying the difference. Incidentally, the amplifier's working voltages are supplied by an enormous toroidal transformer encased, like a bug in amber, in a proprietary damping resin so that buzzes and vibrations won't obscure or obliterate subtle musical details. Beyond that, the power supply is actually quite simple, using a solid-state rectifier bridge and a combination of chokes and capacitors to smooth out all the wrinkles.
Tubed, monoblock power amplifier
Tube complement: one each 12AX7, 6N6P, 6AK5, 5651; two 6C33-B.
Output power: 18Wpc into 4, 8, or 16 ohms at up to 3% THD (dBW).
Input impedance: 41k ohms in parallel with 470pF.
Input sensitivity: 775mV for maximum output.
Frequency response: 20Hz-20kHz, -0.3dB, 3.0% THD.
ML2.1 is the direct replacement of the ML2 -- the first in a line of LAMM single-ended amplifiers with a regulated power supply that represented a new generation of power amplifiers employing unique high current low impedance power vacuum tube triodes (6C33C) in both the output stage and voltage regulator. Implementation of these triodes has allowed to create an output transformer with a very low turns ratio and, as a consequence, extended (as compared even to the most advanced modern vacuum tube amplifiers) frequency decade factor, as well as dramatically reduced leakage inductance.

In Lamm's own words, the ML2.1 is like any single-ended amplifier, except in its execution. A key difference is the serious amount of regulation designed into the amp. When I first saw an ML2.1, at the Home Entertainment 2004 East show, I assumed it to be a single-ended amp using two output tubes in parallel. As it turns out, the second 6C33C tube per channel serves only as a voltage regulator for the first: Without it, fluctuations in the mains voltage could result in distortion and tube damage on the one hand, or less than optimal output power on the other.

The ML2.1's input stages, which comprise a 12AX7 dual triode for voltage gain and a Russian 6N6P driver tube, are also fully regulated—again, with tubes. Here, a 5651 voltage reference tube creates a reference signal from the input, and a 6AK5 miniature pentode continuously compares the output signal with the reference, and corrects the former as necessary by amplifying the difference. Incidentally, the amplifier's working voltages are supplied by an enormous toroidal transformer encased, like a bug in amber, in a proprietary damping resin so that buzzes and vibrations won't obscure or obliterate subtle musical details. Beyond that, the power supply is actually quite simple, using a solid-state rectifier bridge and a combination of chokes and capacitors to smooth out all the wrinkles.

Tubed, monoblock power amplifier
Tube complement: one each 12AX7, 6N6P, 6AK5, 5651; two 6C33-B.
Output power: 18Wpc into 4, 8, or 16 ohms at up to 3% THD (dBW).
Input impedance: 41k ohms in parallel with 470pF.
Input sensitivity: 775mV for maximum output.
Frequency response: 20Hz-20kHz, -0.3dB, 3.0% THD.

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