L3 Line Pre-Amplifier Kit

The L3 Line boasts a number of features and configurations for the DIY connoisseur! This transformer coupled line pre-amplifier is the ultimate in Audio Note DIY engineering.

Since first introducing the L3 kit back in 2005 (known then as the M3 Line Kit) we have received many enhancement requests for the L3 from the Audiophile community including Extension Kits for the selector switch, optional Stereo and mono stepped attenuators, transformer options, different price points etc.

We have also added some new circuitry called CHOKE–decoupling. The schematic opposite shows the location of the 15H choke. Basically, the output transformers now connect directly to the power supply B+. The B+ from the power supply connects to the 15H choke and this feeds the HT (High Tension) voltage on the 5687 Board. The instructions in the manual show the details – a 68uf capacitor is incorporated to ground after the choke.

The standard version of the L3 model includes the following:

• Noble Volume Pot
  
• I/E Core output transformers
  
• (RCA only, non-balanced output)
  
• Audio Note Tin Foil Film Signal Capacitors
  
• Beyschlag Resistors
  
• High Quality Electrolytic Capacitors
  
• DACT extension kit
  
• ELMA Selector Switch
  
• Audio Note AN-A Shielded cable
  
• PTFE silver plated copper wire
  
• Stainless Steel Metric Hardware
  
• Steel Shield
  
• Silver Plated RCA's
  
• M2 Power Supply (6X5/ECL82)
  
• 5687 Line Board (Hardwired or PCB)