Use 12AU7 x 2 pcs, ecc88 x 2 pcs, 6x4 one peice (not incldued in the kit). (there is no instruction, part list, need DIY electronic knowledge. there is risk of failure,you need to know how to make tube preamp work.).
eBay
ART Precision Phono Preamp, Phono Preamplifier, Input switchable between Moving Coil and Moving Magnet, Freely selectable signal preamplification, Switchable Low Cut Filter, Signal / Clip indicator, 2x Line-Out (RCA), 2x Phono- / Line Inputs (RCA),...
Thomann Italia
1pc Musical Fidelity 6J1 Valve Pre-amp Tube PreAmplifier Kit (Assembled Audio Board). Musical Fidelity is the mid-1990s introduced products. Can greatly reduce the "digital taste" and "transistor sound", so that the entire sound system.
eBay
SD Systems L Preamp, Microphone Preamp, Suitable for the LCM microphone series, Input: 6.3 mm jack, Output: XLR output, 48 V phantom or battery supply, Mute switch, Metal housing, Belt clip, Dimensions: 65 x 74 x 30 mm, Weight: 126 g
Thomann Italia
1pc Musical Fidelity 6J1 Valve Pre-amp Tube PreAmplifier Kit (Assembled Audio Board). Musical Fidelity is the mid-1990s introduced products. Can greatly reduce the "digital taste" and "transistor sound", so that the entire sound system.
eBay
tc electronic JIMS 800 Preamp, Effetto a pedale per chitarra elettrica, Serie Ampworx, Preamp, Pedale preamplificatore per chitarra a due canali che riproduce il suono di un amplificatore valvolare JCM800 Custom Shop modificato, Per suoni clean,...
Thomann Italia
Tip: Use shielded cables for audio input and output.
eBay
tc electronic V550 Preamp, Effetto a pedale per chitarra elettrica, Serie Ampworx, Preamplificatore, Pedale preamplificatore per chitarra a due canali che riproduce il suono di un amplificatore valvolare 5150, Per suoni rock e metal high gain,...
Thomann Italia
All-tube mic preamp design derived from legendary Bill Putnam-designed 610 modular console. This is a must have for anyone serious about getting real tube driven sound and smooth compression at world class.
eBay
Xotic Bass BB Preamp V1.5, Effect Pedal for Electric Bass, Booster or distortion, With volume, gain, treble and bass controls, True bypass switch, ±30 dB Boost or Cut@+*Note:* Power supply unit sold separately (not included)
Thomann Italia
Belden 8402 20 AWG stranded (26x34) high-conductivity TC conductors. Belden Spec. Spectacular interconnects! Super musical! For the price it’s tough to beat with it’s smooth musical non-colored sound.
eBay
Friedman IR-X Dual Tube Preamp, Preamplificatore valvolare a pedale per chitarra elettrica, 2 canali, Un impianto Friedman completo in un formato compatto e adatto alla pedaliera, Ogni canale offre la ricchezza di timbri e la risposta dei migliori...
Thomann Italia
◆If there are no special circumstances, your product will not be delayed in arrival.
eBay
Takamine TP-4TD Preamp for G-Series, Preamp, For Takamine G-Series, For two-piece saddles (two connections for piezo), Volume control, 3-Band EQ: Bass, Middle, Treble, Built-in tuner, Low battery indicator
Thomann Italia
For the Pro-ject Phono Box S3 B in order to upgrade performance. A MUST Hi-Fi accessories for Audiophile. Output: DC18V. Output Current: 500mA (RMS). Lockable Circular socket and plug. (NO IEC type mains power lead included).
eBay
Hanika PPA-SLV Volume-Pedal Preamp, Preamp with Volume Pedal, The resistance of the pedal can be easily adjusted using two accessible screws, Power supply: 9V (not included) or with included mains adapter, Including stereo jack cable (straight/angle)
Thomann Italia