Audio Harmony

AUDIONET HUMBOLDT – Ultimate Machine – Integrated Amplifier

39.900  incl. VAT 24%



The machine:
Conceived and built by Audionet`s legendary scientists and engineers, HUMBOLDT shares all the unsurpassed qualities of his brethren STERN and HEISENBERG, winners of the most coveted high end awards during the last three years. The design by German industrial designer legend Hartmut Esslinger hiding the most advanced circuitry and technology money can buy in today`s highenddom, HUMBOLDT stands as an integrated amp unlike any other on this planet. Our HUMBOLDT is the namesake of famed polymath, geographer, naturalist and explorer Alexander v. Humboldt who resurrected the use of the word cosmos from the ancient Greek and assigned it to his multivolume treatise, Kosmos, in which he sought to unify diverse branches of scientific knowledge and culture.This important work also motivated a holistic perception of the universe as one interacting entity.Thus aptly named, Audionet`s HUMBOLDT explores the universe of music and leads us to discoveries unheard before. Enjoy the ride!

The science:

Special features HUMBOLDT

  • Double mono layout of all circuitry and power supply for maximum channel separation.
  • Magnetically and capacitively optimized circuit and device design without any ferro-magnetic materials.
  • Floating Pane Design for optimal resistance against microphonic effects and temperature stability.
  • The floating panels of the body are resonance-optimized by pads on an aluminum frame.
  • Mounting and bolted assembly of transformers made of stainless steel.
  • Air Flow Design circuit boards for an optimum of cooling and stable quiescent currents.
  • Galvanic separation of all analog circuits by opto couplers.
  • Rhodium RCA inputs and mains connector by Furutech
  • Volume controller on a double ball-bearing axis and with magnetic ratchet and optical sensing.
  • DC coupled with no sound diminishing capacitors or coils, shortest signal paths.
  • Four power supplies for positive and negative power currents, separate for input & driver stage and power stage.
  • Two encapsulated and decoupled 100VA and two encapsulated and decoupled 850VA toroid transformers.
  • Low impedance-optimized power capacitors with a total capacitance of 312.000 µF.
  • Total capacitance 400.000 µF.
  • Newly developed contextual operating concept.
  • By-Pass mode for integration into home cinema systems..
  • Audionet Link outputs for the remote control of further Audionet ULTIMATE SERIES devices.
  • Microprocessor control with separate power supply monitor and control of all functions, informing the user on a high resolution display.
  • User definable names for each input, input levels adjustable for each input.
  • User selectable function to remove DC levels from signal sources.
  • Rhodium fuse.
  • PreAmp Outputs in RCA and XLR for connecting additional Power Amps.





Microprocessor controlled Ultimate Linear Integrated Amplifier


In- and Outputs

Inputs: 4 pair Cinch line, Rhodium (Furutech) 2 pair XLR balanced, gold plated (Neutrik) 1 D Sub 9 serial port (control only) 1 SMA for WLAN (control only)
Outputs: 2 pair Cinch line, Rhodium (Furutech) 1 pair Cinch inverted, Rhodium (Furutech) 2 pair XLR balanced, gold plated (Neutrik) 2 Audionet Link, optical 1 connector, gold plated, for additional earth connection


Tech Specs


Technical Data

Type Ultimate Analog Integrated Stereo
Amplifier Output Power 2 x 320 W into 8, 2 x 460 W into 4
Frequency response: 0-700.000 Hz (-3 dB), DC 0,3-700.000 Hz (-3 dB), AC
THD+N <-100 dB @ 1 kHz
SNR > 120 dB, (A-weighted)
Channel Separation >140 dB, 20-20.000 Hz
Input impedance: Cinch (Line): 50 kl
Symmetrical (XLR): 35 kl
Mains: 220…240 V, 50…60 Hz
Power consumption: < 0,5 W Stand By, max. 1800 W
Dimensions: Width: 450 mm
Height: 320 mm
Depth: 505 mm
Weight: 61 kg
Finish/Colours: Corpus: Aluminum, 9 mm, Silver or black Display light or dark Colour TFT
Display: Colour-TFT
Finish Corpus: Silver or black, Display: Light or dark colour TFT

Sales Terms

Price for speakers and speaker cables are per pair, except when is declared per unit. All other items price is per piece, except in bulk cables, which is per meter and interconnect analog cables which is per pair. Prices for some acoustic panels is usually per pair or set. (set of three, four, six, etc pieces)

Manufacturer’s Warranty is two years for all new items within EU, one year in other areas, except otherwise noted, covering production faults, not misuse by end user, i.e or due to thermal shocks, electricity power spikes or short circuit, water leakage, spill over, etc. Used items are covered for six months by the seller / dealer. All related shipping costs are owner’s / buyer’s responsibility and will be charged accordingly. A DOA (Dead On Arrival) should be declared on seven days after delivery and should be covered under and in accordance the warranty terms above and below, unless it is due to courier’s responsibility / fault and thus is covered under insurance.

Warranty claims will be validated checked in person or through video meeting by seller’s authorized personnel.

Seller can repair or exchange or replace malfunctioned product under warranty at his discretion

Shipping costs to and from repair and seller’s / dealer’s facilities and from and to the buyer’s place are buyer’s / owner’s responsibility.

Products travel/shipped insured on behalf and at cost on customer’s / buyer’s responsibility.

Please allow 3 – 5 business days for dispatching after payment has been cleared. Delivery times are tentative and further delays could occur especially during high sales seasons and holiday periods. More over due to the pandemic supply chains disruptions and shipping backlogs, delays could be substantial bigger than usual.

Orders cannot be canceled once a deposit has been made and order forwarded to the manufacturer. Buyer’s online purchase regret only accepted within fourteen days after sale / delivery only for new products in stock in our warehouse, provided that product will be returned unopened and at buyer’s expenses. A RAN (Return Authorization Number) is required and will be provided in just cause from the seller and returned funds in this case do not cover shipping costs from manufacturer’s site and forwarding shipping costs to the end user / customer/ buyer as well as return costs. Used, demo, special discounted items, custom orders, build by order and back-orders are not covered and no refunds will be made, no returns accepted.

Shipped products packaging need to be thoroughly examined for any outside damage and make the corresponding remarks, if any, on the delivery note or even rejecting delivery depending on the damage / problems, informing us immediately. By accepting delivery without any reservation buyer declares his unconditional product acceptance and voids any right to dispute the purchase and or wrong delivery in case of a product damage or DOA.

All sales on special discounts – offers – custom orders in new / used / demo products or special orders, back-orders and built to order equipment are final. No Returns accepted, Refunds provided.

For any not “friendly” resolved claims / disputes, responsible jurisdiction is the courts in the Attica region, Greece .

Audio Harmony is a trademark of RADIOBRAIN IKE VAT # EL800734532