Nvarcher HDAM IV LPF Open Loop Current Transfer Module for Marantz TDA1541 TDA1541A
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Specifications
- Brand Name
- Nvarcher
- High-concerned chemical
- None
- Maximum Power Per Channel
- NO POWER
- Origin
- Mainland China
- Package
- No
- Channels
- 1
- Certification
- None
- Model Number
- HDAM IV LPF
Product Description
With reference to some application circuits of Marantz HDAM, we have designed this IV module by combining our own design of open-loop IV current transfer module.
Current input, zero (midpoint) auto-servo, input and output without capacitance
In order to verify the effect of HDAM SA SA2 SA3, we made separate prototypes and chose HDAM SA as the module with the most open sound and the best sound flexibility.
Sound characteristics:
Compared with the op-amp or negative feedback type sound field is much larger, clear details, low-frequency elasticity is outstanding, clear layers, especially suitable for the performance of large dynamic and large compilation of music
Note:
1. Be sure to power off the operation, or there is a risk of damage to the TDA1541 chip
2. signal pin power polarity must not be wrong
3. 1541 current output feet are 6 feet (R) 25 feet (L), 5 feet analog ground, modified when you need to disconnect the output 2 feet and other circuits
4. Because it is an open-loop circuit design, there may be some background noise inevitably
5. This module is a zero-point dynamic servo adjustment, there will be a burst of sound at the moment of power on, please pay attention to the boot sequence, first open the CD, then open the decoder, then open the preamp, preamp volume to a minimum, then open the amplifier, shut down the amplifier first, remember remember!
The following SA2 SA3 modules are designed according to the official Marantz drawing parameters
The following SA modules are used and are designed according to the official Marantz drawing parameters
Will be made by hand soldering using CARDS solder wire
How to use:
In order to make it easy to install this module even if it is not our DAC, the following auxiliary board is specially designed
and the base plate is fixed, you can use the copper column or something fixed
Pros & Cons
Pros
- Open-loop current transfer design for high-quality low-distortion audio signal transfer
- Zero midpoint auto-servo functionality for balanced audio output
- No input or output capacitors for cleaner more natural sound reproduction
- Based on proven Marantz HDAM application circuits for reliable performance
Cons
- Only compatible with Marantz TDA1541 and TDA1541A audio components, limiting use cases
- No included packaging or mounting hardware requiring users to source installation parts
- No manufacturer warranty or certification information provided
- Partial product description missing key details on installation requirements and performance specs
Common Questions
What audio devices is this current transfer module compatible with?
This module is designed for use with Marantz TDA1541 and TDA1541A audio components.
What type of circuit design does this module use?
It uses an open-loop current transfer module design based on Marantz HDAM application circuits.
Does this module require an external power source to operate?
No, this module does not require any external power supply for functionality.
Does this module include input or output capacitors?
No, the module has input and output circuits without capacitance for cleaner audio signal transfer.
Is this module sold with packaging or mounting hardware?
No, this module does not include a package or additional mounting hardware per the product specifications.
Product information last updated on February 20, 2026