UralTone EF80 Tube Stereo Preamp
UralTone EF80 Tube Stereo Preamp is all tube preamp working with an external 6VAC power supply. It's designed mainly for synth users but can be used with any instrument or signal. Actually, you can get super sweet and harmonically rich distortion with guitar and also connect channels in series to get more gain.
The UralTone EF80 Tube Stereo Preamp, like all UT micro series products, uses NOS tubes that do not have much use in any equipment nowadays. So they are cheap and widely available.
The EF80 is designed for tube radios but also works well in audio amps.
The core of the design has been to create a device that can modify the signal, not reproduce it faithfully. As the name suggests, Stereo Pre includes two channels equipped with tone control. The circuit's gain is relatively high, and it distorts pretty easily. We first started to design this to be used with all kind of synth / drum machines / samplers, but found out that EF80 pre sounds super sweet with guitar as well. Lots of harmonics!
EF80 pentodes are somewhat microphonic, so the signal can also be manipulated in this way.
EF80 has been manufactured in very large quantities for a long time, so availability should also be good in the future.
UralTone EF80 Tube Stereo Preamp is assembled from high-quality components!
- European NOS EF80 tubes
- European mains transformer
- Hammond metal case (optional)
- Nichicon signal path capacitors
The quality of the parts is, therefore, the same as that used in the most expensive boutique equipment.
Specs:
- Gain 60 / 35dB
- Power supply 6-7VAC 2A
- Potentiometers: volume, treble cut
- Size: approx. 121x145x115mm (with tube)
What is included and what is not?
All parts are included to build a complete amp except:
- Aluminium chassis/box. You can build your own from wood/metal or use any 1590XX size diecast boxes. We use Hammond RED 1590XXRD. Selection can be found here:
https://en.uraltone.com/catalogsearch/result/?q=1590XX - External 6VAC 2A PSU:
https://en.uraltone.com/6vac-2a-psu.html - Straight DC plug for external PSU. The DC jack of teh device is fitted below the deck which makes usage of angled DC plug impossible. The plug of PSU above needs to be replaced with straight DC plug. Alternatively it's possible to use the polarity change adapter.
Instructions:
The preamp is assembled by the instructions of UralTone info page picture set on high-quality PCB. Assembly is relatively easy for beginners. We recommend that you familiarize yourself with the assembly instructions in advance.
| SKU | 950-EF80PRE |
|---|
| Stock 1 | UralTone Helsinki, 00530 FI |
4 units available |
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From €55.00 €44.35
To €154.00 €124.19
From €65.00 €52.42
To €140.00 €112.90
