Rare opportunity to own a bespoke custom made, point-to-point wired David Berning Co. octal pure vacuum tube preamplifier with built in passive RIAA phono section section and outboard resonant switching vacuum tube power supply. Unlike Berning's later preamp offerings, this is a capacitance coupled design offering even greater midrange weight, palpability and body. Features many hand selected upgrades and component options. The line stage features NOS 6SN7 octal vacuum tubes with NOS 12SF5 tubes in the phono section. Playback is dynamic, clear and lively, offering a true 3D holographic dimensionality, with solid imaging and an open, grain free musicality with simply wonderful timbre and tonal characteristics. As an octal tube based design, this Berning Preamp requires a high quality, heavy, high mass equipment rack to perform at its best.
David Berning Custom Made Pure Vacuum Tube Octal Preamplifier.
Custom Made Black Aluminum Chassis and Vented Black Aluminum Power Supply Enclosure.
Capacitance Coupled Design.
Features Point-To-Point Wiring Internally.
Line Stage section: (4) 6SN7 octal vacuum tubes (Sylvania 6SN7 VT-231 NOS Chrome tops included.)
Passive RIAA Phono Stage section: (4) 12SF5 octal vacuum tubes (Note: Conversion to 12AX7 ~ 12AV6 single triode tube is possible by tube socket modification for lower noise.)
Outboard Choke Type Resonant Switching Pure Vacuum Tube Power Supply: 33JV6 vacuum tubes.
Cathode Follower Output.
No additional filters.
Turn On / Turn Off Auto Mute Function.
High Level Gain 18dB
MM Phono Stage Gain 46dB
MC Phono Stage Gain with SUT 64dB
Jensen JT-347-AXT Step Up transformers included (1:12 ratio configured)
Rear Phono Plug Resistor Type Loading (RCA) (Spare Loading resistors included) Line Outputs - 2 sets
Line Inputs - (2) Line Level, (2) 47k MM and (2) MC (Includes (1) pair for additional resistor loading plugs).
Jupiter Copper Foil Paper & Wax Capacitors (Line, 2.2 uf) Jupiter Copper Foil Paper & Wax Capacitors (Phono)
Ceramic & Teflon Tube Sockets.
Cardas Pure Copper Ground Post.
Furutech Gold Plated IEC inlet.
GoldPoint 50K Stepped Volume Attenuator
GoldPoint Selector Switch 2-Pole / 5-position
Cardas Gold Plated Female RCA Input / Output Jacks