Site Header Layout

Free Shipping on Everything!
Lamm Industires – L2.1 Reference Linestage Preamplifier
Item #:
Reviews
|
Product Summary:
Jaguar is an authorized retailer for all Lamm Industries gear. Designed by Vladimir Lamm and built at the Lamm New York city headquarters, these products are legendary for their amazing sound...there's nothing else like it. We offer fly-in installation and setup for all reference-level Lamm gear (excluding the LL2.1 and LP2.1). The Lamm L2.1 is the workhorse of the Lamm Reference preamplifier line...not quite at the level of the 4-chassis LL1.1 Signature, but in the neighborhood and at half the price.... Click To Read More
Trial Period 90 Days (Exchange)
Countries Shipped USA
Break-In Time 250 Hours
Have Questions? 844-462-8346
Call our experts for product info and advice or chat now with a specialist.
Price:

Lamm Industires – L2.1 Reference Linestage Preamplifier

$27,990.00

Jaguar is an authorized retailer for all Lamm Industries gear. Designed by Vladimir Lamm and built at the Lamm New York city headquarters, these products are legendary for their amazing sound…there’s nothing else like it. We offer fly-in installation and setup for all reference-level Lamm gear (excluding the LL2.1 and LP2.1). The Lamm L2.1 is the workhorse of the Lamm Reference preamplifier line…not quite at the level of the 4-chassis LL1.1 Signature, but in the neighborhood and at half the price.

$27,990.00

Product Description:

Product Description

The Lamm L2.1 Reference is the evolvement of its predecessor — the acclaimed L2 Reference — and represents top of the line in hybrid and solid-state audio equipment. Unique topology and application of the most advanced technological resources and processes bring the L2.1 near the threshold of excellence in sound reproduction. As the original L2 circuitry was virtually flawless, it was the emergence of new active electronic components that opened up a possibility of transforming the L2.1 circuitry into a vehicle which brings the sound reproduction level even closer to the sound of live music than before.

A main distinction of the L2.1 from any other comparable type of preamplifiers is its almost inaudible sonic signature. When connected to an appropriate type of power amplifiers, and especially LAMM amplifiers, it assures the extraordinary transparency of perceived sound and recreation of a three-dimensional soundstage in the home, recording studio, etc, without boundaries and limitations. In designing the L2.1 special attention was directed toward optimization of the output impedance of the preamplifier with an aim of attaining nearly full independence of the output impedance from frequency, as well as to allow the preamplifier to drive (without audible sonic degradation) significant capacitive loads created by many modern interconnect cables.

Special care was taken in designing a high voltage (+350V) high-speed vacuum tube voltage regulator. Using this voltage regulator, in conjunction with other technical aspects, enables the reproduction of tiniest nuances and three-dimensional subtleties in the music palette (provided that such details had not been lost in a recording process). A somewhat unusual combination of high voltage vacuum tube power supply and super-linear high voltage MOS-FETs allows attaining an enormously large output swing while retaining practically constant harmonic contents of the signal with an absolute dominance of the second harmonic.

The L2.1 Reference employs a pure class A operation from input to output, with no overall feedback at any stage; all stages, including high current output buffers, are single-ended. Also featured are specially selected high voltage super linear MOS-FETs in the signal path and TKD stepped potentiometers for volume control – the best available on today’s market. The preamplifier’s audibly neutral power supply features a choke contained filter, a full-wave vacuum tube rectifier and vacuum tube voltage regulator which allow to virtually eliminate the hum and buzz and, ultimately, to ensure the authenticity of the essence of sound throughout the entire dynamic range without any coloration.

A unique electronic protection circuit enables muting of the outputs until the preamplifier has stabilized after a turn-on; it also enables the functioning of the preamplifier in a “muting” mode during operation and automatic switching to muting in case the AC line voltage drops or is interrupted. Other features include 3 inputs; one tape/home theater processor loop; output signal phase switch; balanced and single-ended outputs; protection circuitry designed to enable manual muting of the output signal; and built-in remote on/off for Lamm power amplifiers.

The L2.1 Reference includes the following upgrades and modifications as compared to the L2 Reference:

  • increased immunity to unwanted radio frequency interferences propagated via both radiation and conduction over signal lines & AC power systems
  • certain modifications in protection and time delay circuitry
  • improved signal/noise ratio
  • replacement of a number of critical components with newly available types of better quality [in particular, replacement of electrolytic capacitors in the tube voltage regulation section with newly developed high density polypropylene capacitors of comparable size and value(!)]
  • utilization of a technologically new type of pc-boards of superior quality, with gold-plated traces and thru-holes.

Each preamplifier is carefully crafted with the finest materials and top quality parts like military-grade DALE/VISHAY metal-film resistors, RCD wire-wound resistors, TKD 41-step volume control potentiometers of the highest quality available on today’s market, BOURNS multi-turn potentiometers, VISHAY electrolytic capacitors, ELECTROCUBE, EPCOS and RIFA/KEMET film capacitors; HAMMOND chokes, gold-plated NEUTRIC connectors, and military-grade low-noise long-life vacuum tubes. The L2.1 Reference features a custom-designed, super-low noise, power transformer. AC voltage is filtered by special RFI power line filter.

Reviews

The following Lamm products received the 2016 Editor’s Choice Award from The Absolute Sound:

– ML2.2 single-ended amplifier

– ML3 Signature amplifier

– LL1 Signature preamplifier

– M1.2 Reference amplifier

– LP2.1 phono preamplifier

– LL2.1 line-level preamplifier

https://positive-feedback.com/reviews/hardware-reviews/lamm-industries-l2-1-reference-preamplifier/
https://www.stereophile.com/content/lamm-industries-l21-reference-preamplifier
http://www.theabsolutesound.com/articles/lamm-industries-l21-reference-line-preamplifier/

“the Lamm L2.1 Reference was the rare product that swept the question of tubes vs solid-state into insignificance, focusing my attention on the music, and on an arguably more important variable in the making of good playback gear: the designer.”

Art Dudley – Stereophile

Check out all the Lamm product reviews, here.

Specifications

Rated Output Voltage

  • From 20Hz-20KHz into instrument load: 0.75 Volts RMS.
  • From 20Hz-20KHz into IHF load: 0.75 Volts RMS.

Voltage Gain

  • 5.54 + 2% or 14.87 + 0.2dB.

Frequency Response

  • From 1-60 Volts RMS into instrument load: -0.2dB) 20 Hz, 20 KHz, (-3dB) 5 Hz, 140 KHz.
  • From 1-30 Volts RMS into IHF load: (-0.2dB) 20 Hz, 20 KHz, (-3dB) 5 Hz, 120 KHz.

Slew Rate

  • Vout=36 Volts peak-to-peak of square-wave signal, F=10KHz: 30 Volts per microsecond.

Rise Time

  • Vout=36 Volts peak-to-peak of square-wave signal, F=10KHz: 1 microseconds.

Total Harmonic Distortion from 20 Hz – 20 KHz

  • Vout=2 Volt RMS into instrument load: no more than 0.03%
  • Vout=60 Volts RMS in to instrument load: no more than 1%
  • Vout=2 Volt RMS into IHF load: no more than 0.03%
  • Vout=30 Volts RMS into IHF load: no more than 1%

IM Distortion

  • Vout=2 Volt RMS into instrument load: no more than 0.03%
  • Vout=60 Volts RMS in to instrument load: no more than 1%
  • Vout=2 Volt RMS into IHF load: no more than 0.03%
  • Vout=30 Volts RMS into IHF load: no more than 1%

Inputs

  • Unbalanced gold plated single-ended RCA connectors.

Input Sensitivity

  • Vout = 0.75 Volts RMS into instrument load: 0.135 Volts RMS ± 2%.
  • Vout = 0.75 Volts RMS into IHF load: 0.135 Volts RMS ± 2%.

Input Impedance

  • 51 KOhms.

Outputs

  • Unbalanced: gold plated single-ended RCA connectors.
  • Balanced: 3-pin gold plated XLR connectors.
  • Balanced pin assignment: pin 1 = signal ground; pin 2 = non-inverting input (+); pin 3 = inverting input (-).

Corrected Output Impedance

  • Typically 130 KOhms.

Noise

  • Signal-to-noise ratio, below 2 Volts RMS output, unweighted: typically 82 dB.

Operating Temperature

  • -4 to +104 degrees Fahrenheit (-20 to +40 degrees Celsius) ambient.

Power Supply

  • Nominal line voltage: 100-240 Volts 50/60Hz. Input voltage range: ±10%.
  • One power transformer, two vacuum tube rectifiers, one filter choke, one high-speed vacuum tube voltage regulator, one solid-state analog non-switching voltage regulator.
  • AC voltage intensively filtered by special RFI power line filter.

Front Panel Controls: Preamplifier

  • OUTPUT LEVEL controls (separate for left and right channels).
  • SELECTOR switches (separate for left and right channels).
  • MONITOR switches (separate for left and right channels).
  • MUTING switch.
  • ABSOLUTE PHASE switch

Rear Panel Connectors & Controls: Preamplifier

  • Four pairs of INPUT CONNECTORS RCA for line inputs and TAPE (play).
  • One pair OUTPUT CONNECTOR RCA for TAPE (record).
  • One pair of OUTPUT CONNECTORS RCA (single-ended outputs).
  • One pair of gold-plated XLR CONNECTORS (balanced outputs).
  • One XLR CONNECTOR (6 pins, gold-plated) for connecting the power supply cable.

Front Panel Controls: Preamplifier Power Supply

  • POWER switch.
  • OUTLETS switch.
  • REMOTE 1 turn-on/off switch for LAMM power amplifiers.
  • REMOTE 2 turn-on/off switch for LAMM power amplifiers.
  • Four LED controls.

Rear Panel Connectors & Controls: Power Supply

  • IEC 320 POWER INLET (3 lug).
  • Two AC OUTLETS, switched.
  • One XLR CONNECTOR (6 pins, gold-plated) for connecting the power supply cable.
  • Two REMOTE CONTROL plugs.
  • EARTHING POST (gold plated).

Features

  • Pure class A fully balanced MOS-FET zero feedback design. Power supply utilizes vacuum tube rectifier, choke contained filter and high speed vacuum tube voltage regulator.
  • High-current drive capability, in combination with unique single-ended class A circuitry, assure the preamplifier’s capability to drive any cable and any real world load, while maintaining its practically inaudible sonic signature.
  • This design is unique to LAMM INDUSTRIES, INC.

AC voltage selector:

  • 100/120/220/230/240 Volts, internally switchable.

Remote Control:

  • Special built-in circuit enables the remote turn on/off of LAMM power amplifiers.
  • Available remote link cable coordinates the remote functions of two or more amplifiers.

Safety:

  • Unique electronic protection circuit enables muting of the outputs until the preamplifier is stabilized after a turn-on, as well as functioning of the preamplifier in a “muting” mode during operation, and automatic switching to muting in case the AC line drops or is interrupted.
  • Vacuum tube voltage regulator overload protection: 0.125 Amps slo-blo fuse, internally mounted.
    AC voltage fuses: 2 Amps slo-blo for 100/120 Volts. 1 Amp slo-blo for 220/230/240 Volts.

General

  • Power Consumption: Typically 95 Watts.
  • Burn-in Time at Factory: Minimum 72 hours.
  • Recommended Burn-in Time in End-user’s System: Minimum 200 hours.
  • Warm-up time: Minimum 45 minutes.
  • Unit dimensions: 4.5 inches high x 19 inches wide x 13.875 deep + 1.375 inches for front handles.
  • Crate dimensions: 23″ x 19″ x 10″ (58.42cm x 48.26cm x 25.4cm).
  • Unit weight preamplifier: 15.42 Lbs (7 Kg).
  • Unit weight power supply: 19 Lbs (8.63 Kg).
  • Shipping weight preamplifier: 34.6 Lbs (15.7 Kg).
  • Shipping weight power supply: 39 Lbs (17.71 Kg).
  • Tube Complement Power Supply:
    • one12AX7/ECC83, voltage regulator tube;
    • one 6C19P, voltage regulator tube;
    • one 5651A, voltage reference tube;
    • two 12AX3, rectifier tubes.

Lamm Industires – L2.1 Reference Linestage Preamplifier

$27,990.00

Jaguar is an authorized retailer for all Lamm Industries gear. Designed by Vladimir Lamm and built at the Lamm New York city headquarters, these products are legendary for their amazing sound…there’s nothing else like it. We offer fly-in installation and setup for all reference-level Lamm gear (excluding the LL2.1 and LP2.1). The Lamm L2.1 is the workhorse of the Lamm Reference preamplifier line…not quite at the level of the 4-chassis LL1.1 Signature, but in the neighborhood and at half the price.

$27,990.00

Reviews

There are no reviews yet.

Be the first to review “Lamm Industires – L2.1 Reference Linestage Preamplifier”

Your email address will not be published. Required fields are marked *