AKSA's Lender Preamp with 40Vpp Output

The pricing for the preamplifier PCB with your choice of qnty 2 x daughterboards, either TH or SMT will be USD $20 per set, plus shipping cost. Shipping cost (with tracking number) will be as follows: in the USA is $5, Canada is $10, and everywhere else is $15.

Please send me PM with your PayPal address (and country I will be shipping the PCB's to) and I will send invoice.

Thanks,
X
 
GB status update.

If you have not done so yet, please PM me your PayPal info, choice of TH or SMT daughterboards (qnty of sets) and country to ship to. Thanks. X

JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, SMT or TH?
CFT - 1 set, SMT or TH?
Jacques Antoine - 1 set TH, Invoice sent
Silasmellor - 1 set THT
Bvtrinh- 1 set TH
ggetzoff - 1 set TH
tubesguy - 1 set TH
Aatto - 1 set SMT
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards.
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Invoice sent
obh - 1 Set(MB) plus TH, Invoice sent
 
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hoping there will be boards available later on

I just cannot afford to build this yet, so I am hoping there will be some boards later on.


someone should start builders thead 🙂

I would like to see how you all get on with chassis etc.
 
JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, SMT or TH?
CFT - 1 set, SMT or TH?
Jacques Antoine - 1 set TH, Invoice sent
Silasmellor - 1 set THT
Bvtrinh- 1 set TH
ggetzoff - 1 set TH
tubesguy - 1 set TH
Aatto - 1 set SMT
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards.
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Invoice sent
obh - 1 Set(MB) plus TH, Invoice sent
PJN - 1 set TH
 
GB Updates

JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, TH, Invoice sent
CFT - 1 set, SMT or TH?
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Invoice sent
Bvtrinh- 1 set TH
ggetzoff - 1 set TH
tubesguy - 1 set TH, Invoice sent
Aatto - 1 set SMT
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards, Paid
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Paid
obh - 1 Set(MB) plus TH, Invoice sent
PJN - 1 set TH
 
JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, TH, Invoice sent
CFT - 1 set, SMT or TH?
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Invoice sent
Bvtrinh- 1 set TH
ggetzoff - 1 set TH
tubesguy - 1 set TH, Invoice sent
Aatto - 1 set SMT
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards, Paid
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Paid
obh - 1 Set(MB) plus TH, Invoice sent
PJN - 1 set TH
manniraj - 1 set TH
 
GB status update

JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Invoice sent
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Invoice sent
ggetzoff - 1 set TH
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Invoice sent
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT, Invoice sent
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards, Paid
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Paid
obh - 1 Set(MB) plus TH, Invoice sent
PJN - 1 set TH
manniraj - 1 set TH, Invoice sent
 
GB Status Update. 30 Motherboards ordered, so we are coming up against a limit of how many more folks can join this GB.

JPS64 -2 sets w/ SMT daughterboards, Paid
Algar Emi - 1 set, TH, Invoice sent
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Invoice sent
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Invoice sent
ggetzoff - 1 set TH
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Invoice sent
Mordikai - 1 set TH
Johnny2Bad 1 set TH; 1 set SMT, Invoice sent
vvs07 - 2 sets TH
Fabian85 - 1 set SMT
PCGAB - 1 Set(MB) with SMT boards, Paid
Harry3 - 1 set MB plus TH
meanman64 - 1 set MB plus THT
Wayne1 - 1 set TH, Paid
obh - 1 Set(MB) plus TH, Invoice sent
PJN - 1 set TH
manniraj - 1 set TH, Invoice sent
Erik777 - 1 set TH, Paid
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid

28 sets so far, 2 remaining. But experience tells me that there will be one or two folks in the list who will not go through with it, so there are probably 3-4 sets remaining, if my estimates of no-shows works out.
 
I just tested this preamp as a headphone amp and it works very well. I installed a 2SA1837 as the output BJT (vs the KSA1381) and dropped Vcc to 24v and bias to 80mA across a 2.2R source resistor on the 2SA1837. Also installed 2200uF 50v output cap to get bass response lower. Listened to a bunch of tracks using DT880-250 in pseudo stereo so amp sees 125ohms load (L&R driven in parallel). It runs dead quiet.
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