Tube pre-amplifier 600:12.5K input transformer, 12.5K:600 output transformer, signal 4.5 times step-up amplification

Electronic tube front stage 600Ω: 12.5K input transformer output transformer signal 4.5 times booster amplification 20Hz～24KHz

600:10K/15K Permalloy 5 times step-up input transformer, balanced input single-ended output transformer 5Hz-27KHZ -2DB

R4 audio input 600Ω: 2K4 step-up signal transformer, 2 times voltage amplification, balanced to unbalanced, 10Hz~50KHz -0.4dB

DC 20V 100mA Passive pre-stage signal input transformer active amplified signal output transformer five times amplification

600:15K, 10K: 10K, 600: 60K, EI35X25 permalloy fully balanced input and output transformer signal 5-10 times boost

R4 audio input 600 ohms: 2K4 boost signal transformer 2 times voltage amplification balance to unbalanced cattle

R4 audio input 600 ohms: 2K4 boost signal transformer 2 times voltage amplification balance to unbalanced cattle

R8 permalloy signal voltage amplification 10 times, 600: 60K audio isolator input transformer, 20dB gain, 10Hz ~ 26KHz -0.5dB

Transformer Kit for Tube Front Stage Input 600Ω: 60K Output 5K: 20K Suitable for Tube Amplifier DIY

R4 audio input 600 Euro: 2K4 boost signal transformer 2 times voltage amplification balanced turn non-equilibrium cattle

1PCS Single-ended tube output transformer 5.5K: 5.5K Input Output 4 Euro III folder two winding technique

2PC Wide frequency response and large dynamic double C amorphous state 2.5K+2.5:10K+10K Signal input transformer Balanced output

R4 audio input 600 ohms: 2K4 boost signal transformer 2 times voltage amplification balance to unbalanced cattle

6P6P, 6V6, 4P1S, 6P1, 6P14 electron tube 5.5K single-ended output transformer, input 5K5 output has 4Ω and 8Ω

6P6P, 6V6, 4P1S, 6P1, 6P14 electron tube 5.5K single-ended output transformer, input 5K5 output has 4Ω and 8Ω

British Naim NAC Permalloy transformer 10K: 10K input 0DB buffer circuit board + 5 times amplified output pre-stage circuit boar

10K: 10K transformer input pure class A single-ended output germanium tube preamplifier board, the circuit gain about 7.5 times

Bile preamp 600Ω: 15K 10HZ-24KHZ -2DB 5HZ-36KHZ -3DB input transformer balanced output transformer, 5 times boost

R4 audio input 600Ω: 2K4 boost signal transformer, 2 times voltage amplification, balanced to unbalanced cattle

R4 audio input 600Ω: 2K4 boost signal transformer 2 times voltage amplification balance to unbalanced cattle

10K:40K Wide Frequency Fully Balanced Permalloy Input Transformer Dual Winding Input and Output Passive 4/8 Times Boost

Bile front stage 600Ω: 15K input transformer, balanced output transformer, 5 times boost, 10HZ-24KHZ -2DB 5HZ-36KHZ -3DB

Electronic tube single end 5K output transformer EI48x30mm input 5K output 4ohm 6ohm 8ohm 16ohm four clamp three winding machine

Dual C amorphous 5K: 20K single-ended balanced output transformer, for preamp transformer input and output circuit

Tube single-ended 5K output transformer, input 5K output 4 ohms 6 ohms 8 ohms 16 ohms EI48X30mm specification iron core

R4 audio input 600 ohms: 2K4 boost signal transformer 2 times voltage amplification balance

1PCS Tube Amplifier Single-Ended 5K Single-Ended Output Transformer for 6P1 6P14 6P6 0-4-8 Ohm DIY Vacuum Tube Amplifier

R4 audio input 600 ohms: 2K4 boost signal transformer 2 times voltage amplification balance

Amplifier Output Transformer 5W Input Impedance 3.5K Can Be Customized Various Output Transformer Power Transformer

Toroidal Transformer 22W Copper Custom Input Output Voltage 22VA Transformer Ring 0-11V(0.4A) 0-9V(1A)

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