Quadraspire Bronze Upgrade (set of 4) Category--Phono Stages The HPA4 features two balanced

The HPA4 features two balanced stereo inputs and two unbalanced stereo inputs

The DAC3 combines active analog gain control

A durable PVC outer jacket gives a high degree of flexibility and mechanical strength

and other external factors

RF blocking nano-crystals

Quadraspire Bronze Upgrade (set of 4) Category--Phono Stages The HPA4 features two balancedBRONZE UPGRADE To celebrate the twentieth anniversary of the Q4 hifi rack we developed the Bronze upgrade that can be easily retro fitted to any Q4 or SVT HiFi rack or wall shelf. Bronze has a broader tonal spectrum and greater sustain that opens the soundstage of your system making it more musical and enjoyable without losing detail. Central to all our research was extensive listening tests using the tried and tested technique of tuning by ear in the