Simple test.
Just buy a cheap 10-50K potentiometer and feed your amp with the source.
If you can get the volume that you require then you dont need any more gain.
After that you can decide which way to go. Less than $1 wasted.
Just buy a cheap 10-50K potentiometer and feed your amp with the source.
If you can get the volume that you require then you dont need any more gain.
After that you can decide which way to go. Less than $1 wasted.
How are most people using the B1 then? Will it not work in my application? I eventually want to add a DAC to mix.
My amp is a B&K Reference 200.2 S2
The B1 is just an impedance buffer.
It has NO GAIN.
A DAC will probably have an output similar to that of a CD player.
It is BRILLIANT at taking a source that needs a high impedance load and then feeding that to a low impedance amplifier.
In simple terms it accepts a common input and will feed a common output. It's like a mediator between two enemies. It wont shout but it will communicate between them.
It has NO GAIN.
A DAC will probably have an output similar to that of a CD player.
It is BRILLIANT at taking a source that needs a high impedance load and then feeding that to a low impedance amplifier.
In simple terms it accepts a common input and will feed a common output. It's like a mediator between two enemies. It wont shout but it will communicate between them.
I get that much, what I'm concerned about is you saying it "might" work with a CDP. That's not what I want to hear (pun intended).
Yes, that is quite true.
However you haven't looked at the details of his amp, which were found immediately on googling it;
It's 1.4v to full output, with a 33K input impedance, so a B1 is practically perfect for what he's after.
Go back to post 21.
A simple test will ascertain wether you need any gain or not. It wont be ideal but for a few pennies you will know what direction to head in.
A simple test will ascertain wether you need any gain or not. It wont be ideal but for a few pennies you will know what direction to head in.
Make the jump. The B1 is a good project to break you into DIY. Mine I did stock as presented in the writeup. I have a wallwart for it but use an energizer battery to power it. So in my setup I drive a DIY chipamp with the B1 with the Pearl 2 connected for vinyl and an Adcom DAC 700 toslink connected to a pioneer pd-65. Plenty of pictures out here to help as well as other DIYer's. Have fun.
You wont be disappointed with the B1 unless you need more gain.
It's a completely transparent no-gain stage that will buffer almost anything to anything else.
It's a completely transparent no-gain stage that will buffer almost anything to anything else.
I remember that... That was a neat widget - do you have a link or photo you could post in this thread?
The DCB1 gets around the problem of the PSU choice by combining the B1 (OK in a different format) with a SALAs Shunt Reg. This is the one that I'm building at the moment.
DCB1 PCBs aren't currently available, hence I etched my own.
DCB1 PCBs aren't currently available, hence I etched my own.
Here's the thread to the DCB1
http://www.diyaudio.com/forums/pass-labs/145201-building-symmetrical-psu-b1-buffer.html
http://www.diyaudio.com/forums/pass-labs/145201-building-symmetrical-psu-b1-buffer.html
Yes they are - P-MEZB1-1V10 - Mezmerize B1 Buffer Preamp (Makes 2 channels; Rev 1.0) - Boards albeit with all the cool extra stuff that the Mezermize has for switching and the starting mute...
I put in an order for the B1 PSB wednesday of last week and have not heard anything yet. Does it usually take this long?
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