New Arrivals/Restock

NC-25A Passive 1:2 Step-Up Audio Transformer for Line-Level Systems, Fully Passive No Power Required, Enhanced Stability for Hi-Fi & Tube Amplifiers, RCA Input/Output by BOYUUSOUND

flash sale iconLimited Time Sale
Until the end
12
22
46

US$101.99 cheaper than the new price!!

Free shipping for purchases over $99 ( Details )
Free cash-on-delivery fees for purchases over $99
Please note that the sales price and tax displayed may differ between online and in-store. Also, the product may be out of stock in-store.
Used  US$68.00
quantity

Product details

Management number 209115998 Release Date 2026/03/29 List Price US$68.00 Model Number 209115998
Category
  • Bullet 1 — Core Function Passive 1:2 Step-Up Transformer for Line-Level Audio Systems Uses a 1:2 passive step-up design to improve signal matching between low-output line-level sources and high-impedance amplifiers, designed for stable performance in more demanding Hi-Fi systems.
  • Bullet 2 — System Benefit (Not “Volume Booster”) Optimizes Signal Matching for Stable System Performance Helps bring weak line-level signals closer to the ideal input range of your amplifier or preamp, supporting smoother dynamics and more consistent system behavior.
  • Bullet 3 — Fully Passive Fully Passive Design, No External Power Required Requires no power supply or charging. Passive architecture helps avoid power-related interference and supports clean, transparent signal flow in noise-sensitive systems, including tube amplifiers.
  • Bullet 4 — Upgraded Build Upgraded Build for Long-Term Stability Robust internal transformer structure and solid aluminum alloy enclosure provide mechanical stability and shielding, designed for reliable use in higher-quality audio systems.
  • Bullet 5 — Compatibility & Boundary Designed for Line-Level Audio Systems Only Works with DACs, preamps, and compatible amplifiers using RCA line-level connections. Phones and PCs require a DAC or line-level output. Not intended for direct headphone connection.
  • ~
UPC 798363846730
Model NC-25A
Brand Name BOYUUSOUND
Part Number NC-19A
Manufacturer BOYUUSOUND
Current Rating 25 Amps
Maximum Frequency 65 KHz
Minimum Frequency 35 Hz
Included Components Quick Start Guide
Item Dimensions D x W x H 1.9"D x 3"W x 1"H

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Product Review

You must be logged in to post a review