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D7 Ultimate Linestage
Valve PreAmplifier
Dual Platform preamplifier with optional (ICB) Isolation Capacitor Bank.
http://www.dalbyaudiodesign.co.uk/products/d7-ultimate-preamplifier.html
The D7 Preamplifier DNA
Valve PreAmplifier
Dual Platform preamplifier with optional (ICB) Isolation Capacitor Bank.
http://www.dalbyaudiodesign.co.uk/products/d7-ultimate-preamplifier.html


The D7 Preamplifier DNA
- Dual 'anti-phase' push-pull 12B4a signal valves
- Shunt regulated glow tubes providing monitored voltage
- Oversized power supply feeding the D7 headunit using 2 Kyoku mains transformers
- 9ct Gold plated copper screening panels for Kyoku transformers
- Kyoku choke input in the PSU isolated on 9ct gold plated thick brass
- Quad PSU capacitor bank, resin dampened and copper screening to each capacitor
- Internal mineral loaded soft silver and mono crystal cast copper wiring
- Acoustically dampened dark mahogany internal chassis
- Choice of GZ34 or GZ37 for PSU rectification
- Supplied with NOS valves
- Duelund silver and copper output capacitors
- 9 way mineral loaded pure silver and mono crystal copper wired umbilical cord