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Let's Tube'n'Roll

As many years since the introduction of the "Mini Dual Triode Headphone Amp" have passed it was now time to develop a worthy successor. Inspired by the experiences of the DIGNA II and the possibility of tube-rolling, Mr.Nixie now introduces a "cute" headphone amplifier to the market, which targets exactly this audience of "tube-rollers".

And whenever Mr.Nixie takes such a stuff into his hands, neither the sound nor the possibility of extensive tube-rolling is left behind. And so, for the first time an amplifier on the market can feature not only different brands of one tube type, but also a whole range of tubes - which are still manufactured today - namely the ECC81, 82 and 83 series.

These tubes are still in service today and were used in the past in almost every audio device or amplifier.
The AGNETA headphone amplifier now offers the willing audio nerd a nearly inexhaustible possibility to test his own tube treasure and finally to find out "his" tube with "the sound par excellence".

Which tubes exactly can be used?

Thanks to a careful voltage feedback, all double triodes of the types ECC81, E81CC, ECC82, E82CC, ECC802S, ECC83MG and 5751 and their international versions such as 12AT7, 6201, CV4024, CV455, 12AU7(WA) CV4003, CV491, 12AX7MG, CV4004, 6057, 6681, 7025 and many others, whereas the heater is connected to pin 4 and 5 plus the filament center tap to pin 9 and the heater current is 12.6 V @ 150 mA in series or 6.3 V @ 300 mA in parallel connection.

For this reason, the types 12BH7-A or ECC99 are not suitable because their filament power is too high or the ECC832 or 12DW7 because they have triode systems with different amplification.
Also Russian double triodes (e.g. 6N2P ~ ECC83) cannot be used, because these tubes do not have the center filament connection on pin 9, and have (like the 6N1P or 6N3P for example) different socket layouts.

With regard to the lifetime, not only the low anode current of 2 mA per triode system (at stabilized 170 V anode voltage) but also the controlled preheating of the tubes with 2 x 150 mA constant current is to be valued as highly tube-friendly.
A two-color LED in the tube socket discreetly indicates the current operating status (red = preheating - no signal, champagne color = operation).



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Mit fast 50% Rabatt
früher 499 € plus Kosten für die Röhre

Nur 299,00 € für AGNETA mit Champagner-Blenden
jeweils mit Röhre und Netzteil sowie incl. MwSt.

[ Klick mich für AGNETA in Champagner - Zahlung 299 € ]

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