AKSA's Lender Preamp with 40Vpp Ouput GB

[manniraj]

My priorities have changed for this preamp with my new tube amp project paired with Fostex 208 drivers. Hence if possible would like to pass the boards that I have already paid to XRK to any of the members here and I hope XRK is fine with that!

Thanks

 

[xrk971]

Hi Manniraj,
Sure, I can remove you from GB 1 and move a person from waiting list over.
X


GB status update:

JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
*manniraj - 1 set TH, Cancelled order, refund initiated
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
*Kokanee - 1 set TH, Added in exchange for manniraj cancellation, Invoice sent

—— Interest List for GB #2 - please add name below ——

Kokanee - 1 sets SMT
Thimios - 1 set SMT
Fabian85 - 1 set SMT
Pinnocchio - 1 set SMT
Mituisho - 1 set SMT
Alurudin - 1 set TH
muthumuthiah - 3 sets all TH, ship all with order from GB #1

 

[manniraj]

Thanks XRK, the refund is initiated

 

[xrk971]

GB Status Update

JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
*manniraj - 1 set TH, Cancelled order, refund initiated
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
*Kokanee - 1 set TH, Added in exchange for manniraj cancellation, Invoice sent

—— Interest List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Invoice sent
Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
Pinnocchio - 1 set SMT, Invoice sent
Mituisho - 1 set SMT, Invoice sent
Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Invoice sent

 

[Kokanee]

Hello X,

Thanks for the updated Invoice (TH & SMT). Invoice paid.

Special thanks to Hugh(AKSA), XRK, and all other's, that make these group buys work. Next spring summer fall in Canada will be filled with smell of solder.

Regards,

Myles

 

[jwjarch]

Count me in for 1 TH set, please.


JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
*manniraj - 1 set TH, Cancelled order, refund initiated
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
*Kokanee - 1 set TH, Added in exchange for manniraj cancellation, Invoice sent

—— Interest List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Invoice sent
Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
Pinnocchio - 1 set SMT, Invoice sent
Mituisho - 1 set SMT, Invoice sent
Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Invoice sent
jwjarch - 1 set TH

 

[briansz]

I'm interested in 1 TH set.


JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
*manniraj - 1 set TH, Cancelled order, refund initiated
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
*Kokanee - 1 set TH, Added in exchange for manniraj cancellation, Invoice sent

—— Interest List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Invoice sent
Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
Pinnocchio - 1 set SMT, Invoice sent
Mituisho - 1 set SMT, Invoice sent
Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Invoice sent
jwjarch - 1 set TH
briansz - 1 set TH

 

[xrk971]

GB Status Update

JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
Kokanee - 1 set TH, Paid

—— List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Paid
*Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
*Pinnocchio - 1 set SMT, Invoice sent
*Mituisho - 1 set SMT, Invoice sent
*Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Paid
*jwjarch - 1 set TH, Invoice sent
*briansz - 1 set TH, Invoice sent

11 sets for GB2 so far. GB1 boards are due to arrive in the US in two days (Wednesday).

 

[steefdebruijn]

Please count me in for two sets SMT

 

[steefdebruijn]

I want to create pre/hp amps so should change to TH boards

 

[xrk971]

GB Status Update...

JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
Kokanee - 1 set TH, Paid

—— List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Paid
*Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
*Pinnocchio - 1 set SMT, Invoice sent
*Mituisho - 1 set SMT, Invoice sent
*Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Paid
jwjarch - 1 set TH, Paid
briansz - 1 set TH, Paid
*steefdebruijn - 1 set TH + spare set SMT daughterboards, Invoice sent

There is an option to get a spare set of 2 daughterboards, your choice for +$10.

 

[Algar_emi]

Excuse me XRK971 but I cannot find the Main Board schematic anywhere. It doesn't seem to be posted with the other files on the first page of this thread. Thanks
SB

 

[xrk971]

Excuse me XRK971 but I cannot find the Main Board schematic anywhere. It doesn't seem to be posted with the other files on the first page of this thread. Thanks
SB

Sorry about that, it is in post #205 of the parent thread. I updated post 1 in this thread to show where schematic can be found.

Schematic for Mainboard here:
http://www.diyaudio.com/forums/atta...-preamp-40vpp-output-diy-aksa-lender-main-zip

Here is PNG of the PDF schematic for your convenience:

For completeness, the TH and SMT Daughterboard schematics are also shown below in PNG format:

Through-Hole:

SMT:

@JPS64: can you please double check to make sure that these are the latest schematics corresponding to the final Gerber files sent to production? Thanks, X

 

[xrk971]

GB Status Update.

JPS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Invoice sent
Algar Emi - 1 set, TH, Paid
Kokanee - 1 set TH, Paid

—— List for GB #2 - please add name below ——

Kokanee - 1 sets SMT, Invoice combined with GB1 invoice, Paid
*Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
*Pinnocchio - 1 set SMT, Invoice sent
*Mituisho - 1 set SMT, Invoice sent
*Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Paid
jwjarch - 1 set TH, Paid
briansz - 1 set TH, Paid
*steefdebruijn - 2 sets TH + spare set SMT daughterboards, Invoice sent

Sorry for the mixup Steefdebruijn - should be good to go now.

 

[Algar_emi]

Thanks. SB

 

[jmc207]

I'm interested in 2 sets, 1 with SMT, 1 with TH, + spare set of TH daughterboards

Thanks, jmc207

 

[xrk971]

I just noticed that cap multiplier circuit R141 on the MB should be 10k not 220R.

 

[xrk971]

GB Status Update

PS64 - 1 set SMT, Paid
Redarc12 - 1 set, TH, Paid
CFT - 1 set, TH, Paid
Jacques Antoine - 1 set TH, Paid
Silasmellor - 1 set THT, Paid
Bvtrinh- 1 set TH, Paid
bvtrinh - 1 set TH (second set), Paid
ggetzoff - 1 set TH, Paid
tubesguy - 1 set TH, Paid
Aatto - 1 set SMT, Paid
Mordikai - 1 set TH, Paid
Johnny2Bad 2 sets total 1 TH & 1 SMT, Paid
vvs07 - 2 sets TH, Paid
PCGAB - 1 Set SMT, Paid
Harry3 - 1 set MB plus TH, Paid
Wayne1 - 1 set TH, Paid
obh - 1 Set TH, Paid
PJN - 1 set TH, Paid
Zman01 - 1 set SMT, Paid
AKSA - 1 set SMT, Paid
xrk971 - 1 set SMT, Paid
spind - 1 set TH, Paid
schlomoff- 1 set TH, Paid
Prasi - 1 set TH, Paid
muthumuthiah - 1 set TH, Paid
*Lydlaug - 1 set SMT, Cancelled
Algar Emi - 1 set, TH, Paid
*Kokanee - 2 sets, 1 TH and 1 SMT, Paid (moved up from FB2)

—— List for GB #2 - please add name below ——

*Thimios - 1 set SMT, Need PayPal address
*Fabian85 - 1 set SMT - need PayPal address
*Pinnocchio - 1 set SMT, Invoice sent
Mituisho - 1 set SMT, Paid
*Alurudin - 1 set TH, Invoice sent
muthumuthiah - 3 sets all TH, ship all with order from GB #1, Paid
jwjarch - 1 set TH, Paid
briansz - 1 set TH, Paid
steefdebruijn - 2 sets TH + spare set SMT daughterboards, Paid
*jmc207 - 2 sets: 1 TH and 1 SMT; +1 spare set TH daughterboards, please send PayPal address

 

[markus22ch]

Hi

2 sets SMT for me please.

many thanks!
Markus

 

[xrk971]

I am having a hard time sourcing the little cylindrical 0204 MELF SMT resistors from Mouser or Digikey in the USA. Does anyone have a vendor that has these in stock? I may have to improvise with 0805 chip resistors.