ASTOR AST-300BMVIP/SP monaural power amplifier

A monaural power amplifier that pursues even more depth than the 300B.

ASTORhas renewed its lineup of high-grade amplifiers to all monaural specifications. This product, AST-300BMVIP/SP, achieves higher output power and deeper acoustic performance by converting a stereo amplifier into a monaural amplifier. You can feel the effect of improving sound quality, especially when driving highly loaded speakers with plenty of leeway.

Establish a stable sound stage

Converting your audio system to monaural greatly contributes to improving the sound field balance. In response to disturbances in the sound field balance caused by room acoustics and speaker placement, monaural amplifiers create a uniform and stable sound field by integrating the outputs of both channels. This improves **audio symmetry (acoustic left-right symmetry)** during stereo playback.

Attention to structure: Mirror finish and oxygen-free copper

The exterior features a 1.6mm thick high-quality stainless steel chassis with a beautiful mirror finish. We pursued a thoroughly robust structure by using 1.5mm thick oxygen-free copper with a clear finish for the middle plate steel material for mounting parts. This prevents resonance from inside and outside, creating noise-free and highly transparentHigh-FidelityContributing to Another attractive feature is that the weight of each unit is significantly lower than that of a full-size stereo amplifier (compared to the company), making it extremely easy to install and handle. (AST-300BMVIP is a model that is 5cm narrower than the SP model.)

Unique technical elements that support sound quality

Equipped with an original transformer that pursues sound quality without compromise while keeping the price down, the input and output terminals use high-quality gold-plated terminals. Furthermore, the self-bias capacitor uses a capacitor of an order of magnitude of 4000 microns, compared to the general specification of 200 to 400 microns. As a result, it is self-biased but equivalent to a fixed bias.High-FidelityWe are realizing this. Using UL connections (ultra linear connections) increases output power, contributing to improved sound clarity and resolution.

Precise operability and excellent versatility

A click-type 31-contact attenuator is used for volume, allowing accurate volume control. It also has a high level of versatility that allows you to easily replace various 300B tubes manufactured by vacuum tube manufacturers around the world to bring out the best performance.