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Bartolomeo Aloia Kits

from 25 August 1999

BA211 - the 211 Single Ended Power Amplifier by Bartolomeo Aloia

  • input stage
  • driver stage
  • distortion/power (17watt => 2.8% thd)
  • distortion/frequency (very linear)
  • frequency response (very good band)

    Kit available escluding the chassie about 1500$

    VTPA The Last - Vacuum Tube Preamplifier by Bartolomeo Aloia


    It is a no compromise tube preamplifier without capacitors on the signal and with a very complex
    power supply sections: all inductive, slow turn-on, regulated and no electrolitic capacitors
  • simplified line stage
  • optional phono stage

    The kit for the line stage escluding the chassie and controls about 1200$


    VTA the Last One Tubes Amplifier by Bartolomeo Aloia


    It is a PP/60 watt, complex/expensive implementation the output tubes are 8 EL34 for channel
    to get 60 watt and only 4 EL34 for channel in the reduced power version 30 watt called TDA-2

    Specifications:
    Output Power......................8 ohm (THD 1%).........60Watt
    ............................................4 ohm (THD 3%).........90Watt
    ............................................2 ohm (THD 3%).........70Watt
    Signal to Noise.....................95db
    Sensibility.............................0.3Volt
    Imput impedence..................100KOhm
    Frequency response..............3Hz to 60KHz
    Tubes....................................8 EL34, 6 6922/E88CC (last version)
    Size and Weigth....................45 x 65 x 30cm (l x d x h) 55 Kg.
    Feedback.............................zero (0db)
  • photo 1 (close one channel)
  • photo 2 of the reduced power version only 30 watt(open two channel)
  • ParaTotemPole stage - input stage - version with max gain
  • ParaTotemPole stage - input stage - version with gain only 1.5db
  • SuperTotemPole stage - driver stage
  • Power Supply - only filaments and input - driver

    Kit available excluding the chassie about 2700$ for the 60watt and 2000$ for the 30watt

    VTAF Volks Tube Amplifier The First by Bartolomeo Aloia


    It is a PP/15 watt, very easy implementation but great sound
    the V1 and V2 are two 12AX7WP -> 12AX7 with the 2 sections
    paralleled and the V3 and V4 are EL34


    Specifications:
    Output Power......................8 ohm (THD 3%).........17.25Watt
    ............................................4 ohm (THD 3%).........20.88Watt
    Sensibility.............................1.7Volt
    Imput impedence..................100KOhm
    Frequency response..............2Hz to 70KHz
    Feedback.............................3db

    Kit available excluding the chassie about 1000$ for the 30watt and 750$ for the 15watt

    GREEN YOUNG GY-50 - Hybrid amplifier by Bartolomeo Aloia
    It is an hybrid amplifier with tube voltage/driver stage and transistor output stage.
    There are a version integrated with a tube line pre stage.

    Specifications:
    Output Power......................8 ohm .........50Watt
    ............................................4 ohm .........75Watt
    Sensibility.............................1.7Volt
    Imput impedence..................100KOhm
    Frequency response..............10Hz to 30KHz
    Feedback.............................zero (0db)
  • schematics
  • components list
  • output section layout
  • frequency response
  • distortion on power
  • distortion decay at 0.125watt
  • distortion on frequency
  • smooth factor on frequency

    Kit available excluding the chassie about 560$ and 620$ for the integrated version

    MSB: Monotriode by Bartolomeo Aloia


    It is an incredible sound 30watt single ended tube amplifier with 6C33C-B or 845 output tubes
    and very important and unique in the world is that you can get 30 watt with one single triode
    and with the 6C33C-B without use high voltage!

    Specifications:
    Output Power......................8 ohm (THD 1%).........30Watt
    Imput impedence..................100KOhm
    Frequency response..............10Hz to 30KHz
    Feedback.............................from 0db to 6db
  • possible output connnections
  • tranformer to power supply connnections
  • ground connnections
  • photo 1
  • photo 2 (look the power supply!)
  • photo 3 (look the power supply!)
  • photo 4 (look the external view here!)

    Kit available in 3 versions from 1300$ to the top version with the 845 output tubes at 2700$


    Preampl. zero feedback by Bartolomeo Aloia

    read and front photo (click to big image)
  • High Level Section
  • High Level List
  • MM/MC Low Level Section
  • MM/MC High Level List
  • Power Supply Section
  • Power Supply List

    VTA 2 Amplifier by Bartolomeo Aloia from CHF (Costruire HiFi)

       it is a PP/30 watt
  • schematics
  • components list

    VolkAmplifier by Bartolomeo Aloia from 50 watt

       40db of feedback - hi-end sound with simple circuit
  • schematics
  • power supply
  • thd at 12.5w on 8 ohm (as single ended tube amplifiers!!)
  • heat pipe
  • no difference with output capacitor
  • components

    Apocalypse Now - The Ultimate Loudspeaker


      

       Woofer Beyma 18G400
       Mid Audax PR17TX100
       Tw Stage Accompany SA8520
       NOTE: The Beyma is connected with a filter to reduce its efficiency and
       to extend the very low frequency response.

    The Bartolomeo's designs are available as kits

       Bartomeo Aloia
       Corso Savona 4
       10024 Torino
       ITALY
       tel. ++39 (0)11 644342 
       email:     bartolomeo.aloia@tiscalinet.it or aloiabartolomeo@tin.it