The main features of R-type transformers:
1.R transformer ratio EI transformer with power, 30% smaller, 40% thinner, 40% lighter. 
2.R smallest transformer magnetic flux leakage, EI transformer than 10 times smaller than the ring about three times smaller cattle. 
3.R-core transformer heat generated than EI transformer least 50% smaller. 
4.R transformer work will not produce noise, this feature is far better than EI core transformer or a gap cut-core transformer, more than the entire volume of the non-cyclic cattle. 
5.R transformer compared with toroidal transformer, greater performance, higher reliability, high insulation performance, easy installation.

Specifications:
Output: independent output lines, and a shielded cable output.

Input voltage: (international voltage - Universal) 
Primary: 
0V (black BLK)-115V (green GRN)-230V (red RED) - shielded wire (yellow-green YEL-GRN) (4 wire) 220V is connected to the black and red lines; 
Secondary: 
0V ~ 15V (yellow YEL), 0V ~ 15V (Brown BRN), 2 groups (0.5A4 line); 
0 ~ 9V (blue BLU), 0 ~ 9V (White WHT), 2 groups (0.8A4 line).

Purpose: dedicated to hi-fi transformer. DAC, amp, preamp, small amplifier, CD player; 
Oxygen-free copper wire (the market with low-grade copper or aluminum lot)

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Package included
1 x 115V/230V 30W High Quality Audio R-Core Transformer