The Integrity II Pre-Amp

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Mr. Yoram Lev is a veteran audio engineer in the major recording studios of Israel. With 18 years of experience, Yoram has developed an acute sense of the needs of both musicians and engineers alike. As a result, Yoram founded Lev Solutions to manufacture state of the art audio equipment, capable of handling the myriad of common needs in the recording environment, and at an affordable cost. The Integrity II transformerless pre-amplifier is the product of these years of experience and development. Knowing that most available pre-amps are transformer-based, and that transformers lead to various problems such as coloration and level differentiations, Lev Solutions opted for the development of a transformerless pre-amp. The Integrity II has considerably more headroom than its competitors, with no sound variation at any level, and a mere 0.5 dB fluctuation between 18 Hz to 35 kHz (see attached table). The casing is treated for passivation, thus eliminating EMI and RFI. Lev Solutions is a highly-specialized boutique manufacturer, where every pre-amp is hand-crafted and tested by the staff. Lev Solutions’ head technical engineer, Mr. Eitan Shamai, is himself a recording engineer, known in Israel as the best engineer for recording classical music, and a stickler for detail and perfection. As a result, this highly reliable and dependable pre-amplifier delivers pristine results every time, always faithful to its source, be it vocals or instrument. The Integerity II can be fitted with selectors, which are highly precise with 5 dB steps, or sweeping potentiometers. The Integrity also comes in an eight-channel version, the Integrity VIII.




  • 19” 2 ch. Mic Preamp.
  • + 48v phantom
  • Electronically balanced input with rf filter (xlr)
  • Electronically balanced output (xlr)
  • Individual channel +/- 18v regulator
  • Polystyrene blocking capacitors






    At 40db gain 20hz-40khz +-0.2db hpf off mode
  • THD+N (Total Harmonic Distortion + Noise)
    At 24db gain +25dbu output 1KHz 0.002%
    At 35db gain +25dbu output 1KHz 0.004%
    At 60db gain +25dbu output 1KHz 0.015%
  • EIN (Equivalent Input Noise)
    At 60db gain 50OHM input resistor -120db
  • CMRR (Common-Mode Rejection) – 70db
  • GAIN RANGE – 13db-65db Rotary Rev Log Pot
  • HPF – 12 db/Octave at 40Hz Linkwitz RILEY Filter
    1M ohm 100p with RF filter unbalanced PL Socket
  • MIC INPUT IMPEDANCE – 5000 ohm
    60 ohm can drive +28dbu20V RMS into 600 ohm
    48V via 2X6800 ohm Resistors M.P
    15VA Toroid Power Transformer
  • MAINS – 230V AC 50Hz






link checkString Quartet


Music Tech Magazine – Six of the Best: Mic Preamps

In our latest six of the best roundup we look at one of the most important elements in your signal chain, the mic preamp… Read Review


Music Tech Magazine – Issue 147

LEV Solutions Integrity II Microphone Preamplifier.
A lesser known company has brought out a preamp with true integrity.
John PIckford gets to grips with kit that lives up to its name… Read Review
LEV Solutions Integrity II Microphone Preamplifier.

Soho Sonic Studios London review

Soho StudiosThree months ago, Soho Sonic Studios was fortunate enough to be loaned a ‘Lev Systems Integrity II’ dual channel mic pre amp. The Lev is designed and hand made by one of Yoram Lev, Top recording and mixing engineer with 25 years of experience, Based in Israel.
The Integrity II is a transformer-less design for a pristine and clear signal path. Straight out of the box, the Integrity II looks fantastic. The red, brushed metal finish and components on the faceplate ooze quality. The mic amp comes with toggles for phantom power, high pass filter’s and to switch between the XLR mic inputs on the rear, and the unbalanced instrument inputs on the front of the unit.
Once plugged in, the slick dual colour LED’s to the right of the gain control flash to show the unit is powered on. These act as input meters for the mic amp, giving you an indication of optimum levels (green light) and when your input source is clipping the preamp (red light).
Over the 3 months we had the “Integrity II”, I have used the pre amp in a wide variety of situations including tracking vocals, drums and acoustic instruments. We also held a blind pre amp ‘shout out’ where we compared it to the other pre amps available in our studio.
We found the Lev to sound extremely transparent and clean. The mic amp has loads of gain, and was an appropriate choice whenever we wanted to capture a sound without noise or coloration. On drums, the Lev was very fast and snappy. The gain control offered low enough gain to be used without a pad on loud signals such as close micing kick and snare drums.
In our shootout, we preferred the Lev on male vocals and softly picked acoustic guitar. It gave us a very clean and realistic representation of the sound source.
We are happy to recommend this pre amp to any other studios looking for a clean and three dimensional sound.

OJ (Ofer Shabi) – MD at Soho Sonic Studios
Arie Van Der Poel – Engineer at Soho Sonic