Looks perfect, but can't find any availability.Sabaj A10h can be used as a preamp.
Available on Audiophonics:Looks perfect but can't find any availability.
I have an A10H which I use as a preamp and it works well.Looks perfect, but can't find any availability.
precision and channel balance and easy remote control yes.A resistor relay volume control preamp adjusts audio volume by switching resistors with relays for precise control and minimal signal distortion
precision and channel balance and easy remote control yes.
Distortion is not really determined by this.
I totally agree. Just don't ever use switch cleaner on one. Ask me how I know...At the end of the day, an ALPs motorized blue velvet (conductive plastics RK-27) is arguably a better choice.
I don't think I've ever had a failed one on my bench.
You have to use the right kind that does not affect the plastic film.I totally agree. Just don't ever use switch cleaner on one. Ask me how I know...
I was trying to work out if the JDS Labs Element IV DAC & HP Amp in the latest ASR review had a relay switched resistors volume control (R2R) and I stumbled across this thread.I'm interested in the Topping L70 preamp. Are there other similar preamps with resistor relay based volume control (with remote) to consider preferably cheaper? thanks.
The A20h has resistor ladder relays for volume control which should assure perfect channel balance.
There are pictures of its PCB, it's obvious that it does not.I was trying to work out if the JDS Labs Element IV DAC & HP Amp in the latest ASR review had a relay switched resistors volume control
No such thing. R-2R is an ancient AD/DA converter topology. Relay-controlled volume controls do not use R-2R ladders.R2R volume controls
Yes, I saw those, too. I was just saying how I came across this old thread.There are pictures of its PCB, it's obvious that it does not.
Yes, I know that, but it is a widely used expression. I'm not aware of a concise and accurate abbreviation to save tiresome seconds typing.No such thing. R-2R is an ancient AD/DA converter topology. Relay-controlled volume controls do not use R-2R ladders.
Try "stepped analog". Includes both relay and rotary switch types, but excludes digital.Yes, I saw those, too. I was just saying how I came across this old thread.
Yes, I know that, but it is a widely used expression. I'm not aware of a concise and accurate abbreviation to save tiresome seconds typing.