Dynamic Sounds Associates introduced the Amp I mono block amplifier at the Rocky Mountain Audio Fest this October. Each Amp I produces 125 watts of pure Class A power and is of solid state design employing an all-JFET/MOSFET design using DC coupled circuit topology following a source follower input with blocking capacitors to provide a constant input impedance and prevent input DC offsets from damaging speakers.
The amplifier has no loop feedback in order to prevent transient intermodulation distortion and to provide a very wide power bandwidth, without concern for output phase shifts caused by speaker loading or amplifier time delay. The output driver uses 8 of the legendary Hitachi power MOSFETs in a push-pull configuration with a bias current of 3 amps to achieve 125W of Class A power output into an 8 ohm load. Each unit has separate power transformers, power supplies and voltage regulators for the amplifier, driver, and output stages.
MBL have introduced the C15 Mono Power Amplifier to their Corona Line of high-end audio components. It offers a mighty 500-watt (4-ohm) and so should be capable of driving pretty much any loudspeaker with ease. MBL claim that implementation of their LASA-technology (Linear Analog Switching Amplifier) results in a “homogeneous characteristic of THD throughout the frequency range” and that the…
Polish company G Lab Design Fidelity got in touch with Hifi Pig to tell us all about their new valve amplifier. At the company’s heart is ELZAB, the company’s production environment which has been working since 1969. They made everything from cash registers to PCs in this factory and G Lab Design Fidelity say that using ELZAB allows them to…
The Progression mono amplifier is the largest and most powerful amplifier that the company has made, delivering 500 watts into 8 ohms, doubling to 1,000 watts into 4 ohms and doubling again to 2,000 watts into 2 ohms. The Progression circuitry borrows greatly from our D'Agostino's Momentum amplifiers. Its design couples their core circuit topologies and introduces a new Dan…
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