GOLD PA ONE AMPLIFIER DIVALDI

DIVALDI GOLD PA ONE – is our latest power amplifier with an advanced design, operating in class A and also capable of operating in a “bridge” mode as a monoblock. This amplifier is a continuation and logical development of our hi-end product line designed for the most discerning listeners. At the same time, its design is the result of market observations and feedback from our long-standing customers.
While it is designed to work with our new DIVALDI GOLD PRE ONE preamplifier, it will easily find its place in any good audio system.

The DIVALDI GOLD PA ONE is another of our devices with extraordinary appearance, because – as with the other devices in the GOLD series – its form is conceived by the outstanding Polish designer Piotr Jagiełłowicz. It is a powerful power amplifier weighing almost 50 kg, but what is really interesting here is its electronic design. It is not only avantgarde, but also directly translates into a rich, transparent, and mature sound.

DIVALDI GOLD PA ONE is also one of those power amplifiers that can successfully compete with the very best on the market. And it is also a clear example of the fact that world-class devices that can really reach the stratosphere of the hi-end can be created in our country.

Key features of GOLD PA ONE:

• A truly unique and rare amplifier operating mode. Our power amplifier operates in class A with variable bias current saturation of the output transistors. This mode of operation is characterized by the fact that the output stage not only does not lose a significant amount of power in the form of the heat, but also ensures the correct operation (extremely important from a sonic point of view) of the power transistors regardless of their load. This is important because other Class A designs usually have problems with instantaneous current efficiency in critical transient states.
• The amplifier is powered by two separate power supplies for the left and right channels. They use a battery of capacitors with that approximates a total of 100,000 uF. Our listening tests also convinced us that one large transformer provides better sound than two smaller ones, so we used a powerful 1600W toroidal unit to provide adequate power reserves. As a result, the amplifier's performance at medium and high power levels is not dynamically limited in any way. In turn, at full amplifier load of 2x 90 W (at 8 ohms), there is always a huge reserve of energy for sharp low-frequency impacts.
• The power amplifier uses a low global negative feedback loop (Low Global NFB), which has been carefully designed to take into account the specifics of the entire circuit.
• An innovative feature of our devices is the use of high-quality isolation transformers in the input stages. Thanks to them, the device is better suited to various sources.
• The heat sinks are made in an innovative horizontal arrangement, unseen in any other design of this type in the world. The heat sink is hand-assembled from precisely machined aluminium plates. Then a large copper element mounted on it, to which the control and the power transistors are mounted to. This solution ensures perfect heat dissipation and allows all key components to operate under the same temperature conditions, which is extremely important in this type of the design. It also directly translates into the highest quality sound, which the GOLD PA ONE maintains in all conditions.
• The amplifier is also equipped with a fully automatic power stage monitoring system. The speaker outputs are switched on by high-quality relays with a delay and switched off immediately if an overload is detected.

It is also worth noting that we have taken care of many practical issues. While the main switch is located on the rear panel of the device, the standby mode switch is located on the front. On the rear panel, you will find logically arranged high-quality sockets and an operating mode switch (between stereo mode and a bridged mode). Moreover, the amplifier has hand-selected and matched components such as input transistors, drivers, and power transistors. We have carefully selected all the key components of the amplifier to ensure not only the best possible sound quality, but also adequate stability and longevity.

Technical Specification:

• Operating class: A with variable bias current saturation of power transistors.
• Rated power: 2 x 130 W/4 Ω, 90 W/8 Ω/ Bridge 1x 380 W/4ohm, 280 W/8ohm.
• Instantaneous power: 2 x 250 W/4 Ω, 2x 180 W/8 Ω.
• Frequency response: 10 Hz-30 kHz (+/- 3 dB)
• THD distortion: 0.1%/8 Ω, 0.15%/4 Ω.
• Bias: automatic.
• Number of output transistors: 6 hand-matched per channel.
• Protections: against DC offset, overload, and overheating.
• Power consumption: idle approx. 110 W, max approx. 1.6 kW.
• Dimensions (W x H x D): 575 x 205 x 450 mm.
• Weight: approx. 48 kg.