Hi amigos,
New Purifi Buffer in V2.1 is now ready with OPA1656 in DIP8 socket. The idea of this group buy is to propose a full pack @fair price for a brand new Purifi Buffer :
SPEC :
- THD: 0,00026% @ Vin 2,5 V RMS
- GAIN: 14 dB
- BANDWIDTH: 2 Hz - 150 kHz
- SLEW RATE: 24 V/uS
- CMRR: > 100 dB @ 60 Hz
- DYNAMIC RANGE: 127 dB
- INPUT IMPEDANCE: 47 Kohm
- NOISE AND HUM: 6 uV
- SIZE : 62mm x63mm
- OP AMPS : OPA1665 (DIP 8)
- POWER SUPPLY: +-12V TO +-18V
Package :
2 X Buffers V2.1
2 X OPA 1656 DIP 8
1X Cable kit (Main power + IDC cable)
Free DHL shipping to Europe only
Price : 215 Euros
Video :
Purifi Amp Buffer V2

New Purifi Buffer in V2.1 is now ready with OPA1656 in DIP8 socket. The idea of this group buy is to propose a full pack @fair price for a brand new Purifi Buffer :
SPEC :
- THD: 0,00026% @ Vin 2,5 V RMS
- GAIN: 14 dB
- BANDWIDTH: 2 Hz - 150 kHz
- SLEW RATE: 24 V/uS
- CMRR: > 100 dB @ 60 Hz
- DYNAMIC RANGE: 127 dB
- INPUT IMPEDANCE: 47 Kohm
- NOISE AND HUM: 6 uV
- SIZE : 62mm x63mm
- OP AMPS : OPA1665 (DIP 8)
- POWER SUPPLY: +-12V TO +-18V
Package :
2 X Buffers V2.1
2 X OPA 1656 DIP 8
1X Cable kit (Main power + IDC cable)
Free DHL shipping to Europe only
Price : 215 Euros
Video :
Purifi Amp Buffer V2

Not looking for a buffer but just shocked with the price for a set of boards, thought this forum is all about making your own stuff and looking at it I think it's way overpriced.
There was a lot of work, at this price it is not expensive!
This is for a pair + Free DHL Shipment + OPA1656 + PSU cables set !
Open your eyes :
ATM Buffer = 199$ / UNIT ! without OP amps and without shipment
Neurochome = 129$ / UNIT without Shipment + 23$ for shipment
And count about $20 for the cable set !
This is for a pair + Free DHL Shipment + OPA1656 + PSU cables set !
Open your eyes :
ATM Buffer = 199$ / UNIT ! without OP amps and without shipment
Neurochome = 129$ / UNIT without Shipment + 23$ for shipment
And count about $20 for the cable set !
Why is it so expensive?
An OPA 1656 cost around 4 dollars.....
Are you kidding me ? Do you think it's the OP amps that are expensive? Do you have any idea how long it took us to develop them? Take a look at the prices at the competition you'll be surprised man 😡
It is true that all these little boards are expensive.
I think is a matter of time to be available Chinese board in eBay for 10 bucks.
I think is a matter of time to be available Chinese board in eBay for 10 bucks.
Are you kidding me ? Do you think it's the OP amps that are expensive? Do you have any idea how long it took us to develop them? Take a look at the prices at the competition you'll be surprised man 😡
With all respect, this is a DIY site, so if you offered them as kits it would make more sense to me.
It's true the competion is expensive.
Just my 2 cents....
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