Neva Audio - Professional power amplifiers
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Two-channel
stereo amplifiers



NA4000
NA3200
NA2900
PA3000AG
PA2000AG
PA1500AG
PA1000AG
Studio I PF
Studio V PF

One-channel
amplifiers



MNA3500#4
MNA3000#4
MNA3000
MNA2100
MNA1900
MNA1700
MNA1400
MNA1200
Studio 2001 PF
Studio VII PF

Two-channel
amplifiers Bi-Amp


NA4602
NA2402
NA2202

Four channels
amplifiers


PA10004
PA7004
PA6004
PA4004

Home system
amplifire
Prof Fidelity


A-360
A-500
A-800M

Series NA
Front-panel of Neva Audio power amplifiers NA3200

Rear of Neva Audio power amplifiers NA3200

Front-panel of Neva Audio power amplifiers MNA3000

Rear of Neva Audio power amplifiers MNA3000
Series NA
All models
Models of NA series : NA40000NA3200NA2900MNA3000#4 MNA3000#4 MNA3000 MNA2100 MNA1900  MNA1700 MNA1400 MNA1200 NA4602 NA2402  NA2202

The amplifier is provided with a 2-mm steel housing and an aluminum front panel of 6-mm thickness. It has an economic height 2U!

The circuit topology of the amplifiers of this series combines the advantages of classes A and G, thus providing high linearity and efficiency, small heat dissipation and boosted reliability as a consequence. The signal path consists of the voltage amplifier and current amplifier whereas the total negative feedback is absent. The voltage amplifier is based on the tracking cascode circuit which works in a pure class A, hence the sensible distortion are reduced to the zero. The current amplifier has a complementary circuit consisted of bipolar transistors Sanken which works in a dynamic class A. A high efficiency is achieved owing to three-level power supply (class G) with power control by means of N-channel MOSFETs.

The effective cooling system is used, wherein the transistors are provided with fluted heatsinking and the air stream cools all of them simultaneously. "Dual mono" units are taken as a basis of configuration. Audiophile circuitry and handiwork technology ensure high reliability, perfect characteristics and excellent quality of sounding. The effective protection against overload (Overload Protection) as well as a high-speed solid-state thyristor circuitry of protection of the loudspeakers reduces the risk of their damage to the zero. Furthermore, protection from RF, infra-low frequencies, from a short circuit and a constant voltage on an output, from overheat of output stages and transformers, from an overload on an input up to +15 dB are also available. A delay and smooth rise of a signal at turn-on are also provided. A circuit of smooth connection to the mains is operating.

The amplifiers of series NA Neva Audio can be used for tours, installations in studios, theatres, cinema-halls, disco-dance clubs and making the sound of the living concerts.

"Neva Audio"
Russia, 197183, St.Petersburg, Sabirovskaya 37,
Phone/Fax: (+7 812) 430-93-56
info@nevaaudio.com info@nevaaudio.com


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