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
The Adrenalin amplifier represents the point of arrival of the InPoL, or Inseguitore a Pompa Lineare or Linear Pump Tracker concept. The essence of such apparatus is that of a tube amplifier featuring a very sensitive and refined timbre, combined with a surprisingly and amazing output capacity. It really seems that Pathos designers and technicians achieved their goal; an iron fist concealed in a velvet glove.

Inpol devices have a special sonic personality obtainable only by means of this particular circuit design – fully balanced in Class A using a single solid state component in follower configuration, with high current gain and with voltage gain together. The valve amplifier amplifies the input signal voltage and InPol supplies the current to drive the loudspeakers without any further amplification. 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 of between 25% and 50% together with a low output impedance which is fundamental for the damping factor, and further improved by the double InPoL.

Symposium Of Power And Fidelity
The monoblock delivers 200 Watts of power on a load of 8 Ohms and uses a layout tested many times by Pathos. In fact this is a balanced stage which means that each amplifier is made of two power stages connected with InPol configuration, intrinsically functioning in class A.

Hi-End Gotha
Pathos likes to underscore that an InPol stage can work only in class A. It is neither a push-pull circuit, where it is possible to choose how deep to polarize the final stage during the phase of design. Nor a single-ended stage, considering the presence of a reactive element that works in symbiosis with an active device, in this case a group of MOSFETs connected at common drain. InPol represents an alternative between the two configurations. Hence this topology created and patented by Pathos has properly gained by now its place in the Gotha of Hi-End.

Engineering Art
This power buffer with unitary gain is controlled by a tube amplification stage using three double triodes, two ECC83/12AX7 and one 6H30. The first stage generates voltage amplification based on differential totem pole with two12AX7. The second is a buffer with a common anode with the 6H30 that has the function of driving two groups of power MOSFETs. The signal on the two outputs amplified and out of phase between them, is delivered to two buffers with InPoL technology.

Incredibly Quiet 12 Amps
The polarization of the two power stages is at a very high level. It allows a delivery of constant electrical current to avoid interface problems with diffusers. In this machine, technicians will find a series of outstanding details in the sophistication of the design. Starting from a power supply completely stabilized for the signal stages on anodic voltage that has a built-in C-multiplier in order to obtain the maximum filtering on the voltage current generators and on the ignition voltage of filaments. The main important feature that distinguishes this project is the sensitive power supply that has to deliver a continuous electrical current of more than 12 A. Because the amplifier is at zero feedback it’s necessary to use filtered power supplies in order to avoid hum noise in the output. Pathos as usual did not care about the cost of components and has used an optimum inductive / capacitive switching power supply able to perfectly filter the electrical current of the two power stages. For instance the weight of filter reactance is 12 Kg.

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.
– Tubes: 1 x 6H30 + 2 x 12AX7 ECC83.
– Gold plated terminals to fight corrosion.

Electrical Specifications
– Nominal configuration: one channel class A amplifier
– Expanded configuration: balanced double InPol
– Continuous power @ 8 Ohms: 1 x 200 Watts
– Continuous power @ 4 Ohms: 1 x 200 Watts
– Input impedance: 100 Ohm
– Frequency response: 5 Hz – 60000 Hz
– Total harmonic distortion: 0.01 %
– Damping factor: 25
– Signal-to-noise ratio: 98 dB

Physical Specifications
– Length: 680 mm
– Width: 300 mm
– Height: 440 mm
– Weight: 80 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.