Vinnie Rossi L2 Signature Preamplifier

The global market has nothing at all like it.

L2 is the first and only one of its kind… 

Srajan Ebaen - 6Moons

Vinnie Rossi L2 Signature



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.


Vinnie Rossi L2 Signature Preamplifier N

Vinnie Rossi 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.


Frequency Response  (with stock EH300B tubes)

2Hz – 500kHz (+/- 0.5dB)
0.5Hz – 950kHz (+/- 3dB)

Output Impedance  (SE and BAL)

< 100 ohms
Input Impedance  (SE and BAL)

Approx. 10K ohm
Voltage Gain    

8 dB  (with stock EH300B tubes)
0dB   (DHT Bypass Mode / Unity gain JFET buffer only)
SNR   (with stock EH300B tubes)

-120dB (A-Weighted), SE IN/OUT
SNR   (DHT Bypass Mode)   
-140dB (A-Weighted), SE IN/OUT
12Vdc Trigger Outputs

12V (+/- 0.1V), 200mA max (each)

with on/off switch on front panel
THD+N  (with stock EH300B tubes)

Less than 0.5% (unweighted), SE IN/OUT
THD+N  (DHT Bypass Mode)    
Less than 0.0006% (unweighted), SE IN/OUT
Volume Control

64 steps (approx. 1dB per step) from -∞ to +8dB
Balance Control
24 steps from L to R (approx. 1db per step)

Power Consumption

Approx. 65W

– Fused AC input
– MOV (AC input surge protection)
– Output short circuit protection


17.25″ wide x 14.5″ deep x 8.75″ tall

438mm x 368mm x 222mm

38 lbs (17.2 kg)
Shipping Weight    
62 lbs (28 kg) including travel case

Vinnie Rossi L2-Preamplifier-Rear-Silver

Vinnie Rossi L2 DAC - Optional    $3,495

The L2 DAC is our latest, statement-level d-a converter module that allows music to flow in an effortless manner that mirrors true analog playback with its highly resolving and dynamic, yet non-fatiguing sound signature. No matter if you are playing PCM files from 16-bit/44.1kHz to 32-bit/768kHz or DSD files from DSD64 to DSD512, you will become captivated listening with Vinnie Rossi’s approach to digital playback.


L2 DAC Features

  • Bit-perfect playback at sampling rates up to PCM 768kHz (16, 24, or 32 bit compatible), as well up to DSD512. Sample rates are viewable from front panel display.

  • Dual-mono design, with one flagship AKM AK4497EQ d/a chip per channel.

  • Fully discrete, pure Class-A JFET analog outputs stage design with cascode constant-current source biasing (no opamps).

  • On-board FPGA buffer and femto-reclocking circuitry negates effects of jitter. Isolated input stages.

  • ‘NOS’ (non-oversampling) filter mode with digital filter bypass, as well as a Minimal Phase digital filter mode (selected via the “FILTER” button on the L2 Remote).

  • Absolute polarity ‘normal’ / Absolute polarity ‘inverted’ modes (selected via the “PHASE” button on the L2 Remote).

  • Belleson Super-regulated voltage feed to numerous ultra-low noise, linear voltage regulators used throughout (for both digital and analog sections).

  • “Silent” mute ‘reed relays’ (*barely* an audible click from the board when changing tracks of a different sample rate).

  • Inputs : 1 USB, 1 Coax (75-ohm BNC, with included RCA adapter) and 1 TOSLINK (optical).

  • Connect up to three devices and switch between them via L2 front panel or the remote handset.


L2 DAC Specification

  • Output Voltage2.0V rms

  • Output Impedance< 100 ohms

  • SNR> 115dB

  • Playback Bit Rates Accepted (PCM)16, 24, 32

  • PCM Windows44.1, 48, 88.2, 96, 176, 192, 352, 384, 705, and 768kHz – driver included.

  • PCM Mac OSX44.1, 48, 88.2, 96, 176, 192, 352, 384, 705, and 768kHz – no driver required.

  • PCM Sonore44.1, 48, 88.2, 96, 176, 192, 352, 384, 705, and 768kHz

  • DSD WindowsDSD64, DSD128, DSD256, and DSD512 Native mode, and DoP) – driver included.

  • DSD Mac OSXDSD64, DSD128, DSD256 (DoP) – no driver required.

  • DSD SonoreDSD64, DSD128, DSD256, and DSD512 (both Native mode, and DoP


The L2 Preamplifier receives very rare Lunar Eclipse Award!

The global market has nothing at all like it.

L2 is the first and only one of its kind…