About us
Thanks to the high power of 250 W, high SPL up to 129 dB, weight starting at 6 kg and excellent FRFR speakers, the amplifiers are perfect for acoustic and jazz guitars, but they also work well with modelers such as Fractal and similar.
1995—2014
Custom amplifiers for acoustic and jazz guitars
The core of the Jaaz Acoustic design team consists of two engineers with a love for music and electronics, Jan O. Soelder and Ivo C. Miler. One of them, a lover of jazz keyboards, used to design electrophonic organs and the other, an avid fan of jazz guitar, built guitar amplifiers.
Their first designs saw the light of day in the 1970s, a time when market prices of well-known products vastly exceeded the budgets of teenagers who wanted to obtain them legally.
The original JA designs from 1995 were based on cabinets welded from aluminum sheets to achieve extremely low weight. The pressure conditions in the cabinet were remedied by a complex system of rib stiffeners to ensure dimensional stability and minimize the effect of the cabinet construction on the resulting sound reproduction quality of acoustic and jazz guitars.
2015—2022
Custom amplifiers for acoustic and jazz guitars
Since 2015, the cabinets have already been manufactured from high-quality musical birch plywood, the material of which comes mainly from the European Boemerwald and Black Forest regions.
Starting in 2000, only analog preamps working in class A were used. The power electronics were designed in a hybrid arrangement to exploit the full potential of light acoustic transducers. The power amplifier delivered a peak power output of 350 W. Depending on the sensitivity of the acoustic transducers, the SPL value reached up to 129 dB at a distance of 1 m for the size of 15". For the extremely light coaxial 8" acoustic transducers, the SPLmax value reached a value of 125 dB at a distance of 1 m.
(Just Amps And Zen)
Acoustics
2023 until now
Low weight and high performance.
The FRFR era of lightweight neodymium acoustic
drivers and analog transformerless power technology.
The extraordinary design of our products intends to support the artistic expression of any singing acoustic, jazz or electric guitar player. The amplifiers that appeared on our website in 2024 are the result of 10 years of development and repeated testing with professional acoustic, jazz, and electric guitarists.
Our new generation combo amplifiers are made from the best and most carefully tested components. The guitar circuit components come from proven local and global manufacturers, especially from Europe and the USA. The electronics are largely handmade and undergo continuous quality testing.
The cabinets of the combo amps are made of musical birch plywood from wood available only in the old Boemerwald and Schwarzwald forests on the border of Germany, Austria and Bohemia.
Acoustic transducersare are mostly coaxial FRFR types from Jensen. The coaxial speakers do not require the use of a frequency crossover, which causes distortion due to phase shifts, especially at high power outputs.
Ivo C. Miler and Jan O. Soelder
