Pathos - Globally Recognised Brilliance
Pathos is known and appreciated worldwide as a manufacturer of high quality amplifiers. These products have received numerous international awards and positive feedback aplenty from the press. Pathos' headquarters have been changed twice within the last few decades, in order to follow increasing demand. There has been a steady growth and the product range has been extended. Pathos is in the middle of a heavy development, which is bringing several new products. It's evolved it's revolutionary INPOL circuit design to convey sound in the best possible way.

The current Pathos factory is five times bigger than the previous one. This allows the company to separate its departments to one specialising in woodworking, another in metal processing and so on. The development laboratory is even bigger, as Pathos focuses more on technological innovations than ever before. Thanks to the new projects and its unorthodox approach, Pathos will keep working towards it's goal of amazing both ears and eyes. For Pathos it's all about passion.

Inpol Series – The Perfect Human Touch
Producing amplifiers that deliver a magical feeling requires more than just advanced technology or the latest industrial tools. To reach the zenith of the listening experience the human touch is an absolute necessity. Each Inpol product is assembled by hand and extensively tested, undergoing numerous different quality tests to ensure it meets the highest standards. The personal knowledge and proprietary know-how, gained by Pathos' dedicated engineering team over many decades of experimenting with sound; permeate all Inpol products.

Design Ideologies
InPoL2 MkII is the evolution of the already well-known InPoL2, a historical exponent of the second generation of InPoL® amplifiers. The InPoL2 MkII was born from the need to have more power on 4Ω (20% more) and, consequently, more BIAS current. Pathos also wanted to improve the power supply of the power amp. Last but not least, it wanted to offer the possibility of directly connecting digital sources; thanks to the integration with its HiDac Mk2.

Supplying The Power
Pathos opted for a return to a linear power supply (transformer – bridge – capacitors). Leaving the power of 45W on 8Ω unchanged, it wanted to give more power on 4Ω. Pathos therefore increased the BIAS current which made larger radiators necessary than in the previous version. The different choice of power supply allowed it to redesign it in a dual-mono configuration of 2 transformers (one per channel), 2 rectifier bridges (1 per channel), and 4 capacitors (2 per channel).

InPoL devices have a special sonic personality obtainable only through this particular circuit design – fully balanced in Class A. In this way, the signal is entrusted to the valves and becomes a true copy of the original, with all the quality, purity and harmonic content of the original. This technology allows an increase in the theoretical output in pure Class A from 25% up to 50% together with a low output impedance which is fundamental for the damping factor, and further improved by the double InPoL. The volume, as in the previous InPoL2, uses fully balanced attenuators with relay switching, which select high quality and precision resistors.

The Return Of Tradition
The InPoL2 MkII features a dual InPoL circuitry (international patent). This unique circuitry, fully balanced in Class A; uses a single solid-state component in a follower configuration with high current gain and unity voltage gain. The tube amplifier amplifies the input signal in voltage and InPoL provides the current to drive the speakers without further amplification. In this way the signal is carried by the tubes and is a true copy of the original with all the original quality, purity and harmonic content. In other words InPoL® copies the signal received from the source without modifying the harmonic content and keeping the naturalness of the signal unchanged. Therefore the only task of InPoL® is to supply the current needed to perfectly drive the speakers. The entire amplifier, from the input to the speaker connection, is fully balanced.

The overall sound of the InPol is nothing less than stunning in its detail. The musical, rich, warm sound of the tubes combined with the pace and dynamics of the MOSFETs results in an excellent performance. The absence of listening fatigue combined with transparency, presence, the huge soundstage and the ability to reproduce all instruments realistically are all factors of true high fidelity in the InPol amplifiers.

Digital Sources
The InPoL2 MkII is designed to accommodate the optional HiDac Mk2 card, which adds to the selection of digital inputs already present on the rear panel by default. The HiDac Mk2 card allows digital sources to be connected via USB from the PC and SPDIF directly to the amplifier. The HiDac Mk2 board’s converter is state-of-the-art and guarantees high-fidelity reproduction.

Craftsmanship
For heat dissipation the tried and tested Pathos radiator was used, which provides exceptional results due to its shape which by reproducing the PATHOS logo; guarantees a large dissipation surface. The front panel is made from a single block of aluminum, engraved in precise points to provide space for the control circuits.

Exploring InPoL – Pathos’ Patented Technology
The early theory influencing the whole InPoL project comes out to avoid any kind of general output-input back-feedback. It is claimed that, despite a fine developed back-feedback implies important benefits; it is considered always something artificial. This influences the sonic outcome and causes a loss of naturalness and spikiness. A good project not including the use of back-feedback implies on the other hand a higher rate of conversion and a slightly poorer damping factor, to put up with naturalness and harmony of the actual signal.

InPoL was born from this design theory. Developing a power stage without any back-feedback, featuring a limited distortion and a satisfactory damping factor. For this purpose it has been used a single solid-state component in follower configuration, with hypothetical voltage gain = 1 and with high current gain. Polarization is in pure Class A to avoid crossover distortions, typical of Class AB stages. Only solid-state NPNs are used, which are totally different from PNP ones; this difference could only be solved by back feedback. InPoL makes use of a big inducer as energy supply, which is driven by a transistor as a controlled current generator. In so doing the theoretical efficiency is doubled from 25 % to 50 % and low impedance is achieved, necessary to get a correct damping factor.

InPoL features an amplification factor of 1 when current is provided, so it copies the signal received from the input, without changing the harmonic content and keeping the signal naturalness unchanged. The only task of InPoL is therefore supplying the necessary current for driving the loudspeakers perfectly. InPoL is a worldwide patent.

Design Features
The rich heritage of this astute and masterful designer, together with its ever-increasing technical acumen; is conducive to these components featuring a vast array of impressive design ideologies incorporating the latest technological advancements. Some of these include:
– Engineered in-house in Italy.
– Extreme reliability.
– Efficient yet pure class A topology.
– Gold plated terminals to fight corrosion.

Electrical Specifications
– Nominal configuration: two channel class A amplifier
– Expanded configuration: integrated stereo amplifier
– Continuous power @ 8 Ohms: 2 x 45 Watts
– Continuous power @ 4 Ohms: 2 x 75 Watts
– Input impedance: 17000 Ohm
– Frequency response: 2 Hz – 150000 Hz
– Total harmonic distortion: 0.004 %
– Damping factor: 100
– Signal-to-noise ratio: 97 dB

Physical Specifications
– Length: 530 mm
– Width: 430 mm
– Height: 195 mm
– Weight: 38 kg

Documentation
– Technical sheet

Important Disclaimers
Given the dynamic nature of electronics industries these days; below are listed some very important specifics you need to be aware of.

Brand Authorization And Stock Sourcing
We are a fully authorised Australian dealer of this brand and all stock is sourced through legitimate channels. It therefore enjoys full Australian warranty, backing and support.

Pricing Structure
Whilst we endeavor to offer the best price possible, we ask that if you do find a better price elsewhere from an authorised dealer; please contact us. Also be aware that we regularly conduct group buys and sales, therefore pricing can sometimes be subject to change without notice.

Stock Structure
Being a dynamic store is conducive to our inventory constantly changing. We list only a small portion of our stable online, usually products most popular. Aside from these we also stock numerous other variants and configurations of these products, hence if you don’t see what you’re after please contact us.

Shipping
All our products are shipped with registered and insured postage. Upon ordering you’ll be issued with a receipt, a consignment note via which you can track your order, and we’ll also SMS you photos of the package for identification purposes.

Technical support
This last one we cannot emphasise enough! Please contact us if you require any further information or assistance with the setup and use of this product, especially pertaining to aspects more technical. As we want you to get the very best from this product.