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We love to make specials, as an example we have here a preamplifier with 4 independant channels. This preamplifier have an integrated volume control that adjust the 4 channels in parallel with a minimum of gain difference. 

 

PRE16 "Preben" has 4 RCA phono inputs per channel and 2 RCA phono outputs

 

4 selectable inputs, relay switched volume control built with discrete resistors 

 

NOTE! all amplifier stage are 100% tube and OTL, no solid state components nor transformers or chokes are used in the audio chain

 

Volume and input choice can be controlled by remote 

 

Advanced stabilised power supply, (anode och heater) give very low levels of hum and noise

The amplifier is built using so called Point to Point, (PtP) technology, ceramic solder supports are used that can withstand 5kV. To use PtP is rather time consuming but make it easier to control crosstalk between signals especiallly in the high impedance circuits that are being used in tube amplifiers. The chassies is made of 10mm aluminium which gives extraordinary mechanical stability and completely remove vibration induced noise. 

 

We use a volume control built with discrete resistors in PRE16. We recognise that there are very good potentiometers available but for the ultimate performance a discrete resistor base volume control give better performance and is impossible to beat.  The volume control in PRE16 has 64 positions that are switched using relays with gold plated contacts. 

 

PRE16 is equipped with 6CG7 tubes, 6CG7 is a whole glass variant of the well known 6SN7 that is often praced for its sound qualities.

 

 

 

 

Gain  

                                   

Channel balance

     

Input-impedance

                                       

Output-impedance                                      

 

Harmonic  distortion, ()           

 

Frequency response

                                

Hum and noise                                   

 

Volume control                                    

 

Mains voltage                                      

 

Power consumption                             

 

Dimensions                                     

 

Input connectors     

                                         

Output connectors   

 

Mains connector

 

Remote control function

 

Tube complement                      

                             

Weight                                                  

 

 

12dB, (4 times)

 

+- 0.05dB

 

40kohm

 

300 ohm

 

<0.001% a 1kHz at 1V output

 

5 - 100kHz - 1dB

 

 <-100dBA at 1 V output

 

64 steps

 

230V ± 10%

 

100W max

 

430 x 370 x 110 mm,  (B x D x H) 

 

Gold plated phono 4 inputs

 

Gold plated phono 2 outputs

 

IEC320 with integrated power switch and dual fuses

 

Volume level, input channel, mute

 

4 6CG7, 2 6N6Pi

 

11.5kg

PRE16, "Preben"

Preamplifier with 4 channels