Vinnie Rossi

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L2 Signature Preamplifier

Likely the world’s first example of extreme performance derived from absolute circuit reductionism, the L2 Signature Preamplifier brings an unmatched listening experience. We configure only one pair of the finest sounding 4-pin, directly heated triodes (DHT) in a dual-mono, class-A topology with zero feedback. Absolutely no compromises in bandwidth, phase, speed and directness, and no distracting effects of driver tubes, coupling caps or output transformers equates to reproduction of music with intense spaciousness, harmonic sophistication, liquidity and detail that surpasses small triodes and transistors alike.

Vinnie Rossi also included various degrees of flexibility into his statement design. Numerous DHT tube families are compatible with the flick of a switch, and the tubes can be easily bypassed and substituted with a purist JFET buffer stage for a change of mood or to assess the precise contributions of a particular pair of tubes against a bypass. Perhaps most enticing are the optional L2 Dac and Phonostage add-on modules, each fed from independent, super-regulated power feeds. If you crave the incomparable sound of big, direct-heated triodes without limitations, we invite you to experience the incredible sense of realism and effortless musical connection that the L2 Signature Preamplifier delivers.

Each unit is meticulously hand-built and tested by Vinnie Rossi himself. Its no-compromise construction with integral resonance control and use of the highest-quality components assure that the listener will enjoy superior performance for many years.

L2 Signature Preamplifier Features

  • Vinnie Rossi’s latest Class-A, ultra wide bandwidth directly heated triode (DHT) preamplifier design, compatible with: 2A3, 45, 300B, PX4, 101D, 205D, and SV811 DHT families with one-switch filament voltage selection.
  • Dual shielded power supplies with in-rush current limiting.
  • Dual-mono layout using multiple patented Belleson super regulators for ultra-quiet linear voltage regulation of the L&R triode B+, L&R triode filaments, and power to the (optional) L2 DAC and L2 Phonostage modules.
  • Discrete, 64-step resistor ladder volume control using Pickering England silent signal relays.
  • True active balanced (XLR) and single-ended (RCA) inputs and outputs.
  • Dual 12V Trigger output jacks with on/off control switch on front panel.
  • Internal, “DHT bypass mode” switches (Replaces DHT stage with a Class A JFET stage).
  • Internal front panel display & LED brightness controls.
  • Yamamoto solid Teflon UX-4 tube sockets.
  • Solid, precision CNC machined aluminum chassis and “bank vault,” ball bearing control knobs.
  • Solid, precision CNC machined aluminum ‘L2 isolation Base’ with Stillpoints ULTRA MINI feet.
  • Mesh tube covers for added noise shielding and tube protection, with matching mesh ventilation on top panel.
  • Included tubes: EH300B Gold-Grid (matched pair).
  • Full-function aluminum remote control handset.
  • Designed and manufactured in the USA.
  • 10-year warranty.
  • Includes custom, military-grade hard travel case.

L2 Signature Monoblocks

A perfect complement to our L2 Signature Preamplifier, these class-AB MOSFET reference amplifiers combine a short signal path with a purist output stage of just one pair of output devices. A super-quiet, highly-responsive linear power supply capitalizes on our past experience with batteries and super-capacitor virtual batteries but delivers more power in a denser form factor. The result is extreme bandwidth for maximum speed, superb dynamics, fantastic bass response and the ability to recover the finest musical nuances in the most complex passages – and above all, a completely natural and engaging sound.

Rather than class-D type power ratings that go well beyond what the vast majority of listeners will ever use, we focus on realistic power from an attractively compact chassis for highest sound quality over quantity. The L2 Signature Monoblocks exemplify simplicity, exceptional build quality, and remarkable finesse to communicate music’s emotional content.

Each unit is meticulously hand-built and tested by Vinnie Rossi himself. Its no-compromise construction with integral resonance control and use of only the highest-quality components assure that the listener will enjoy superior performance for many years.

L2 Signature Monoblock Features

  • Ultra-wide bandwidth, Class AB MOSFET topology.
  • Very short signal and power paths.
  • Custom-wound, 500VA toroidal power supply transformer.
  • Over 100,000uF of very low ESR power supply rail capacitance.
  • 12V Trigger Input.
  • WBT NextGen 0703cu Speaker Binding Posts.
  • Neutrik RCA, XLR, and 12V Trigger input jacks.
  • Solid, CNC-machined aluminum chassis.
  • Solid, CNC-machined aluminum ‘L2 Isolation Base’ with Stillpoints ULTRA MINI feet.
  • Designed and manufactured in the USA.
  • 10-year warranty.
  • Includes custom, military-grade hard travel case for each L2 Signature Monoblock.

L2i ‘Signature Edition’ Integrated Amplifier

The L2i-SE is our response to “what if?” What if we could combine our L2 Signature Preamplifier and L2 Signature Monoblocks into one chassis but with absolutely minimal concessions to design and performance? Could we still offer all the flexibility, build quality and stunning appearance to truly stand in a class of its own? The L2i-SE is Vinnie Rossi’s realization of that dream.

Unlike the L2 Integrated Amplifier (L2i), which runs a simpler 6SN7 linestage, the L2i-SE inherits from our L2 Signature Preamplifier the direct-heated big power triodes. Only one pair of the finest sounding 4-pin, directly heated triodes (DHT) are run in a dual-mono, class-A topology with zero feedback. They feed a true dual-mono, high-bandwidth class-AB MOSFET output stage making the L2i-SE a DHT hybrid integrated amplifier and likely the only one of its kind in the world! 

There are absolutely no compromises on speed and tonality, nor any distracting effects of driver tubes, coupling caps or output transformers. Music is reproduced with intense spaciousness, harmonic sophistication, liquidity and detail well beyond small triodes and pure transistors alike. 

You get the same flexibility as the L2 Signature Preamplifier (flick-of-a-switch tube rolling, tube bypass mode, L2 Dac and Phonostage options) and the full-function L2 remote handset. Merging all of this with superlative build quality, reliability and a 10-year warranty make the L2i-SE a striking single-chassis proposition that sits just one step below our flagship separates!

L2i-SE  Features (Linestage)

  • Vinnie Rossi’s latest Class-A, ultra wide bandwidth directly heated triode (DHT) preamplifier design, compatible with: 2A3, 45, 300B, PX4, 101D, 205D, and SV811 DHT families with one-switch filament voltage selection
  • Dual-mono layout using multiple patented Belleson super regulators for ultra-quiet linear voltage regulation of the triodes, and the (optional) L2 DAC and L2 Phonostage modules
  • Discrete, 64-step resistor ladder volume control using Pickering England silent signal relays
  • True active balanced (XLR) and single-ended (RCA) line level inputs and preamplifier outputs
  • Internal “DHT bypass mode” switches (replaces DHT stage with a Class-A JFET stage)
  • Yamamoto solid Teflon UX-4 tube sockets
  • Mesh tube covers for added noise shielding and tube protection
  • Included tubes: EH300B Gold-Grid (matched pair)
  • Full-function aluminum remote control handset

L2i-SE Features (Power output stage)

  • Wide-bandwidth, purist Class AB MOSFET topology (only one pair of output devices)
  • True dual-mono power supply with custom-wound toroidal power supply transformers
  • WBT NextGen 0703cu Speaker Binding Posts
  • Speaker outputs can be switched on/off via the front panel

Additional Features

  • Solid, precision CNC machined aluminum chassis and “bank vault,” ball bearing control knobs
  • Solid, precision CNC machined aluminum isolation base with Stillpoints ULTRA MINI feet
  • Designed and manufactured by Vinnie Rossi in the USA
  • 10-year warranty

L2 Integrated Amplifier

The L2i is our response to “why not?” Why not simplify our L2 Signature Edition Integrated Amplifier (L2i-SE) for customers looking to avoid the expense of big, exotic direct-heated triodes like the 300B or 2A3? Why not offer the same flexibility, stunning build quality and appearance – including a large percentage of the Vinnie Rossi Signature Edition sound – at a more attractive price point? The L2i is Vinnie Rossi’s answer to that question.

The L2i’s gain stage incorporates a single pair of octal 6SN7 small triodes instead of inferior 12AX7/6922 types. The 6SN7 with its beefier plate structure is tonally far more sophisticated and our top choice when DHTs are too costly. Ours run in a dual-mono, class-A, grounded-grid circuit with zero feedback. This feeds a true dual-mono, high-bandwidth class-AB MOSFET output stage to make the L2i an exceptional hybrid integrated amplifier. The tubes set the sonic characteristics and the transistors add the high-current drive for challenging speaker loads. It’s a best-of-both-worlds scenario with very low maintenance or tube replacement costs.

This integrated amplifier reproduces music with terrific spaciousness, harmonic sophistication, liquidity and detail that transistors simply cannot achieve on their own. You also get the L2 Dac and Phonostage options and full-function L2 remote handset. Merging all of this with superlative build quality, reliability and a 10-year warranty make the L2 a striking single-chassis proposition. It sits just one step below our flagship integrated but at a significant savings to offer you the highest performance/price ratio in our product line.

L2i Features (Linestage)

  • Class-A, ultra wide bandwidth, dual 6SN7 octal triodes.  Also compatible with CV181, 6N8P and 6BL7 tube families. 
  • Dual-mono layout patented Belleson super regulator feed for ultra-quiet linear voltage regulation of the triodes, and the (optional) L2 DAC and L2 Phonostage modules
  • Discrete, 64-step resistor ladder volume control using Pickering England silent signal relays
  • True active balanced (XLR) and single-ended (RCA) line level inputs and preamplifier outputs
  • Internal “tube bypass mode” switches (replaces tube linestage with a Class-A JFET stage)
  • Included tubes: EH6SN7 (matched pair)
  • Full-function aluminum remote control handset

L2i Features (Power output stage)

  • Wide-bandwidth, purist Class AB MOSFET topology (only one pair of output devices)
  • True dual-mono power supply with custom-wound toroidal power supply transformers
  • WBT NextGen 0703cu Speaker Binding Posts
  • Speaker outputs can be switched on/off via the front panel

Additional Features

  • Solid, precision CNC machined aluminum chassis and “bank vault,” ball bearing control knobs
  • Solid, precision CNC machined aluminum isolation base with Stillpoints ULTRA MINI feet
  • Designed and manufactured by Vinnie Rossi in the USA
  • 10-year warranty

Professional Reviews

Ken Kessler and Paul Miller review the L2i-SE Integrated Amplifier (July 2020) [Click here to expand]
Marc Phillips reviews the L2i Integrated Amplifier [Click here to expand]
Matt Clott reviews the L2i-SE Integrated Amplifier (TAS, May 2020 issue) [Click here to expand]
Anthony Kershaw reviews the L2i-SE Integrated Amplifier [Click here to expand]
The L2i-SE was featured in the Dec 2019 issue of Robb Report [Click here to expand]
Steve Huff Photo reviews the L2i-SE Integrated Amplifier [Click here to expand]
Michael Lavorgna reviews the L2 Preamplifier & Monoblocks (Part 1/2) [Click here to expand]
Anthony Kershaw reviews the L2 Signature Preamplifier [Click here to expand]
Jack Roberts reviews the L2 Signature Monoblocks [Click here to expand]
The L2 Preamplifier receives very rare 6moons.com Lunar Eclipse Award! [Click here to expand]