The clues lead to a new beginning at Mosconi so we added a Product Review: Mosconi Gladen PRO 5/30. The Italian electronics company, which has recently excelled in DSPs and tiny digital amplifiers of the D2 series, has finally come up with something huge. Surprisingly, the AS-series top amplifiers have managed to preserve their position in the very competitive high-end market for nearly a decade, and their distinctive design immediately differentiates them from other amps.
But now it’s time for something different: with the Mosconi PRO amplifiers, a new amplifier range with high standards has arrived on the scene. The 4 small channel amplification units are on the right, the 6 circuit boards with signal processing 48 ge are on the left, and the first is the PRO 5/30, which we have a brand new in our editing department. And the PRO is already announcing the shift with its completely new design: the brushed metal slide-in housings have been phased out. But don’t worry: the light-metal frame hasn’t changed; it’s just a little nicer now, with rounded corners and a contrasting black perforated plate insert with illuminated branding.
This gives the amplifier an extremely refined appearance; the spectator notices various steps and recesses that capture the eye without considering the entire structure as ragged. Mosconi also introduces its first huge power amplifier with more than four channels; previously, six and eight channels were only available in the ONE and D2 series. It has evolved into a five-channel model, the 5/30 (the 30 denotes the largest available box), and despite the changes, a peek at the board reveals the traditional Mosconi hallmark.
Everything is tidy and well-organized on the standard red circuit board, and the interior heatsink, which is made of aluminum, has been preserved. All of the power components, a total of 35, are positioned along with it, and two big fans provide cooling in the event of an emergency. For the first four channels, the circuit is class AB, as expected, and for the bass channel, it is class D. The four small channels are then split into channel pairs of different power, yielding three power amplifiers: a modest dual-channel for channels A/B, a stronger dual channel with a double transistor for channels C/D, and a digital mono channel for channel E.
Signal processing is done on six separate subsidiary boards: one for low and high pass filtering per channel pair, one for signal routing, and one for high-to-low level conversion. There’s also a bypass switch for bypassing the diplexers, as well as one selection switch for each channel, allowing the PRO 5/30 to be fed a two-channel, four-channel, or six-channel signal.
Sound and measurements As previously stated, the 5/30 houses three amps in effect. Channels A/B already deliver 80 watts into 4 ohms, making them ideal for full-fledged compo systems. The power and dampening factors at channel pair C/D are nearly double what they are at the first two channels. The load resistors receive a crisp 160 or 254 watts, which is more than enough for all aspects of life. As a result, the bass channel is still up for debate. With 472 and 700 watts of power, it’s more than capable of driving even full-sized subwoofers.
However, its distortion behavior is slightly disappointing, considering there is already a lot of clutter at close to 1% THD. On a sub-woofer, this isn’t a cause for concern, but it’s also not pleasant. On the other hand, clear delight reigns supreme in terms of sound. The PRO’s ability to persuade virtually every loudspeaker to produce excellent music is quite remarkable. The Mosconi sound catches the listener from the first note. The 5/30 performs music with a high level of intensity without sounding overly analytical.
Music of all genres is honestly received by the ear, and the intricacies of sound are easily discerned. Mosconi shows them as though they were ducks taking to the water, leaving no dispute about the reproduction’s “correctness” or attention to detail. You merely listen to music and are unconcerned about technology. This is just how it ought to be. Conclusion With the PRO 5/30, Mosconi is setting the groundwork for a new line of amplifiers that will meet even the most stringent sound requirements. We’re already looking forward to what’s to come.