|
Home | Forums | Rules | Articles | diyAudio Store | Blogs | Gallery | Wiki | Register | Donations | FAQ | Calendar | Mark Forums Read |
Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc. |
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
![]() |
|
Thread Tools |
![]() |
#1 |
diyAudio Member
Join Date: Apr 2017
|
![]()
Hello all,
am new to the idea of using a preamp, always thought I could get away with a volume control on the source and directly go into the power amp. However, lately I dabbled using the preamp section of a Yamaha AV1 receiver between source and power amp (ARC VS115) and it has a bit more "foundation" with it. SO now I am infected with the idea of getting a balanced tube preamp and really intrigued by this chinese clone Hi End AudioResearch ARC Tube Preamplifier Balanced/RCA IN&OUT,12AU7/ECC83+ECC88/6DJ8 Preamp DIY Kit|Amplifier| - AliExpress There are many questions just arising from the text (it can be found on ebay as well, but the pictures on this ad are better) Assumptions: 1) the coupling transformers are to connect unbalanced inputs and process them as balanced 2) the rectification and voltage regulation is included (board and part-wise, except the EZ90 tube) 3) hard time finding a transformer fitting the requirement 280V (two sides), this one is quite close 80W pure copper R-core transformer for tube preamp / phono 280V-0-280V +6.3V *2 | eBay would one get away in connecting the 2nd 6.3V circuit in series to the first one to tap of 2A @ 6.3V and for the series connection 12.6V at (2A, instead of 3A)? 4)not familiar with preamp topology...no need for an output transformer??? 5) a quick search would have the total cost for board, transformer, tubes at 335 US, worth it or better get something what looks like the finished (copy)? 12AU7 ECC88 Valve Tube Bile Preamp Pre amp American ARC Circuit Tube HiFi Balanced Bile Preamp Chassis shell/finished machine|Amplifier| - AliExpress for roughly twice the price 6) I am really interested in building a kit this time (it has been a long time since I did something in the amplification world) What are your thoughts? Have you build one of these clones yourself? Cheers brxl |
![]() |
![]() |
Thread Tools | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
BPPBP - Bruno Putzey's Purist Balanced Preamp (well a balanced volume control really) | Bertel | Analog Line Level | 1000 | 10th January 2021 05:01 AM |
true balanced, fake balanced and other balanced amps | studiophone | Solid State | 4 | 6th May 2020 07:58 AM |
WTB Bruno Putzeys Balanced Preamp or another Balanced preamp | shattered_dream | Swap Meet | 3 | 14th August 2018 02:34 PM |
Which Firstwatt (kitset) should I be investigating? | Coelacanth | Pass Labs | 19 | 3rd June 2018 04:26 AM |
Investigating Dipole Bass in a Small Room | Eric Weitzman | Room Acoustics & Mods | 19 | 20th May 2006 11:51 PM |
New To Site? | Need Help? |