Desired load is below 40 Ω. Consider using a primary-side load for very low target impedances.
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                      One of the highest quality line level amorphous core transformers available on the market, ideal for DAC output stages and AC coupled line stage outputs. LL1684 is a high-level, general-purpose, amorphous core transformer which can be used for microphone or line input, for line output and for galvanic isolation. The windings are arranged to give perfect symmetry if the transformer is used in phase splitting input applications. Lead time Most transformers are made to order and incur a 4-8 week winding time, we do stock some popular models in which case your order will be shipped immediately. If you have any questions about this product or need some help with your design please contact us. 
MC1 Load Calculator
Optimise your moving coil cartridge loading
Results
Instructions
- Select your transformer model and step-up ratio
- Enter your phono input impedance (default is 47kΩ)
- Enter the desired load impedance for your cartridge
- Optionally enter cartridge specs for gain predictions
- Click Calculate for loading recommendations
Notes:
When the desired load is below 40 Ω, you’ll see an advisory suggesting a primary-side load. Calculations still run normally.
"No resistor required" - Phono input already provides suitable load
Moving Coil Step Up Transformers explained
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