Characteristics
28 Kilograms of Passion
The AMP I V2 represents an exemplary combination of pioneering Audionet technology with the company’s typically detail-obsessed scientific application and experience-based knowledge.
The sonic culture of the AMP I V2 is characterized by emotionality, sincerity and completeness. Performing quickly and with extremely fine resolution, it dazzles with its richness of detail. At the same time, the delivery is relaxed, devoid of the least hint of harshness or rigidity. Dynamic leaps are imparted with the necessary impact, without being merely loud. The bass is resolute and richly contoured. All this amounts to strikingly realistic holographic quality. And as a machine, the new Audionet discreetly stays in the background and creates a space within which the effect of the music can unfold – in all its artistry and emotionality.
Ultra-Linear-Amplifier
The AMP I V2 is fitted with state of the art of Audionet’s ULA (Ultra-Linear-Amplifier) technology, which generated not only world-wide attention but won a number of awards. Originally invented for the purposes of medical engineering, this highly complex circuit topology provides cutting-edge measuring-technical results. Signal impurity remains below detectable levels even under the most strenuous of circumstances, whilst its outstanding feedback damping ensures that the loudspeakers perform at full capacity.
Cream of the Crop
Every sound-critical point in the AMP I V2 is fitted exclusively with the finest components procurable worldwide, many of which are custom-made for Audionet. For instance, the filter capacitors are manufactured according to our specifications by specialists in the USA; the bulk of our high audiograde electrolyte capacitors with a silk dielectric come from a Japanese audio manufacturer. We rely on mica capacitors, insert selected high voltage foil capacitors, deploy high-quality silver-gold alloys for our internal wiring and use the very best connector systems available from Furutech.
Architecture
The AMP I V2 sets standards regarding linearity, reflux damping and loudspeaker control. It is magnetically and capacitatively optimized and coherently assembled as a dual-mono amplifier. This minimizes feedback from magnetic fields and electrical interference rays, thus eliminating nearly all reciprocal influences between the amplification channels as well as between the input, correction and output stages.
In order to optimize its high-frequency attributes, circuit size has been radically reduced. The remaining signal paths are kept to a minimum and are free of sound-critical components such as coils, chokes or relays. All in all, distortion is near-eliminated. The damping factor pushes the possibilities to the edge. The input stages are double-differential pre-stages with monolithic dual FETs separately powered by an 80 VA toroid-core transformer with separate windings for each channel. Their gain-bandwidth product exceeds one Gigahertz. Double bootstrapping decouples them from the power stages. Each output stage possesses four power MOSFETs.
Their bias current (0.4 A) is actively controlled. They are supplied by two 700 VA toroid-core transformers and four fast, impulse-stable high-current capacitors with filtering capacity totalling 188,000 µF. Distortion is compensated-for locally by a real-time correction stage. The voltages are smoothed as rapidly a possible by optimized discrete MOSFET regulators. A control unit with separate power supply monitors DC, HF, temperature and overload. If necessary, it disconnects the AMP I V2 from the mains supply, thus ensuring absolute operating safety.
Function
Stereo power amplifier.
Special Features
- Audionet ULA technology (Ultra-Linear-Amlifier)
- Dual-mono amplifier
- Magnetically and capacitatively optimized construction
- Signal paths are kept to a minimum
- No capacitors and electromechanical components in the signal path
- Completely DC coupeld
- Separate power supply for input and power stage
- 2 toroid transformer, each with 700 VA
- 4 impulse-stable high-current capacitors with filtering capacity totalling 188,000 µF
- Discrete, extremely fast and stable driver and output stages
- Control unit for HF, DC, temperature rise and overload
- Remote activation via Audionet Link (optical waveguide)
In- and Outputs
| Audio inputs: |
2 Furutech RCA line, gold plated, teflon insulated |
| Loudspeaker outputs: |
2 pair Furutech 4mm-jacks, rhodium plated |
| Remote activation: |
2 Audionet Links, optical (in- and output) |
Technical Data
| Output: |
2 x 200 Watts into 8 ohms
2 x 300 Watts into 4 ohms
2 x 450 Watts into 2 ohms
1 x 600 Watts into 8 ohms (bridged)
1 x 900 Watts into 4 ohms (bridged) |
| Filtering capacity: |
188,000 µF |
| Frequency Response: |
0 – 300,000 Hz (-3 dB) |
| Damping Factor: |
> 10,000 @ 100 Hz |
| Harmonic Spectrum: |
k2 typ. -120 dB for 25 Watts @ 4 ohms
k3 typ. -123 dB for 25 Watts @ 4 ohms |
| Intermodulation: |
< -110 dB SMPTE 100 Hz : 20 kHz, 4 : 1, 50 W @ 4 ohms |
| Channel Separation: |
> 100 dB @ 1 kHz |
| THD + N: |
< -102 dB at 1 kHz, 35 Watts @ 2 ohms between 20 Hz and 20 kHz |
| SNR: |
> 106 dB at 10 Veff |
| Input Impedance: |
37 kOhm, 220 pF |
| Power Consumption: |
max. 1,500 W |
| Mains connection: |
120 or 230 V, 50…60 Hz |
| Dimensions: |
width 430 mm
height 175 mm
depth 315 mm |
| Weight: |
28 kg |
| Front panel: |
Brushed aluminium, black anodized, light grey printing
Brushed aluminium, silver anodized, black printing |
| Display: |
Red or blue |
| Cover and heat sink: |
Brushed aluminium, black anodised |
| Chassis: |
Sheet steel, black varnished |
Press comments on AMP I V2
Jazz recording legend Jim Merod in “Positive Feedback”, Issue 80, July 2015
“This unit renders audio signals the way Monet painted watercolors: degrees of blended harmonic beauty and understated sonic efflorescence-real tonal complexity in real ambient space without exaggeration. Doubtless this immense degree of textural audio delicacy and harmonic richness derives from point-to-point wiring with the shortest possible signal paths. Two 700VA toroid transformers along with impulse-stabilized high current capacitors frame its musical bloom and dynamic glory. The input stage and the power stage have separate power supplies. This is a Rolls Royce engine waiting to upgrade almost any high-end sound system with a Toyota price tag.
The large and small of its sonic footprint slowly stunned me into full comprehension. At this price point such breath-taking delivery of delicate and leading edge signal feeds-individual notes hung in absolute darkness; orchestral ferocity slammed with articulate force; vocal timbres were delineated exquisitely-seems an aberration until distrust of inexpensive gear gives way to recognition of a new level of performance at a profoundly modest price point. Because I adore stumbling upon audio equipment that delivers maximum value at any price level – a cost ratio in favor of less wealthy listeners – this Audionet unit began to shine with angelic wings in my appreciative gaze. It is more than an economically virtuous stereo amp. It is a solid candidate for Audio Product of the Year after considerable scrutiny.”
Salzburger Nachrichten Austria
“That impulsiveness and drive with simultaneous delicacy as with the latest power amplifier AMP I V2 is extraordinarilyy hard to get elsewhere.”
Press comments on the predecessor AMP I
Stereoplay Germany
“Constructed without compromise, a powerful amplifier with excellent sound properties for a surprisingly reasonable price.
Absolute Top Class I, Reference“
Highendnews.com
“An excellent amplifier by any measure, and definitely one for the shortlist.”
Stereo Germany
“High power output, controls even impedance-critical loudspeakers, perfect sound.
Excellent ***“
Music Home Studio Netherlands
“This stereo poweramplifier is build up extremely solid. […] The sound is open, stable, subtle, detailed and gives much knowledge of the recording conditions. […] His control over loudspeakers is amazing. The presentation of the music is natural and casual. The reader will see that this is a kind of magic.”
High Fidelity Sweden
“This high-tech combination from Audionet offers a unimpeachable musical odyssey and simply a sound quality of international top class. […] This sound bears comparison with any other products, and this includes even the great American devices. […] A tough nut for the established labels of the market.”
Like an event horizon,
© Audionet GmbH