Moving Coil SUT Load Calculator

Custom Transformer & E24 Resistor Calculator

Find the nearest E24 load and see the real outcomes

Transformer Primary DCR (Ω)

Transformer Secondary DCR (Ω)

Step-Up Ratio (Ns/Np)

Phono Input (kΩ)

Desired Cartridge Load (Ω)

Cartridge DC Resistance (Ω) Optional

Cartridge Output (mV) Optional

Tip: Press Enter to calculate.

Results

Theoretical Resistor:

N/A

Nearest E24 Resistor:

N/A

Effective Input Impedance:

N/A

Voltage Gain:

N/A

Output Voltage:

N/A

Enter transformer DCRs (Ω) and step-up ratio.
Enter phono input in kΩ (e.g. 47 for 47 kΩ).
Enter your desired cartridge load (Ω). Optionally add cartridge DC resistance and output (mV).
Press Calculate or hit Enter.

Effective Input Impedance = Primary DCR + reflected (Secondary DCR + parallel of phono input and E24 shunt)/n².

Gain includes transformer ratio, DCR losses, and loading.