Recent content by Firefart
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Metcal PS800 or SP200?
Hi all! I must say I'm am pleased to say I've worked with SP200 MX500 PS800 and few others. the thing is, if you have money around, go for the top! its better but will probably be an overkill and very underused. I have a SP200 for hobby but I was considering getting an PS800 since the tips are...- Firefart
- Post #17
- Forum: DIY (Do-It-Yourself) Discussions
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Small portable battery powered amp?
(note: dead link...) power saving is a requirement? is it mains powered or battery? I've been looking at some digital (PWM class D) amps (SMT tough...) and found that analog devices has some good ones.... if you manage to find the inductors for the output filtering... Ic's like AD1992...- Firefart
- Post #2
- Forum: Portable Headphone Amps
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Extreme low power VS Sound quality - Possible?
Quote: Originally Posted by boomana There is an opamp thread in the DIY forum. Maybe ask there? I'll try out- Firefart
- Post #6
- Forum: Portable Headphone Amps
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How to properly charge and prolong the life of Lithium batteries
Quote: Originally Posted by Firefart I use the MAX1555! of course... it is SMT but it's worth it (for single cell applications) its not that difficult to wire in a (appropriate) PCB I've been testing one in a breadboard with an small SOT23 adapter and it works like a charm...- Firefart
- Post #46
- Forum: Portable Source Gear
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Extreme low power VS Sound quality - Possible?
anyone?- Firefart
- Post #4
- Forum: Portable Headphone Amps
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Extreme low power VS Sound quality - Possible?
Thanks for the help! but I missed one point... these op-amps are not for the headphone drive. the output section will be the one with power hungry.. the EQ must not "waste" power...- Firefart
- Post #3
- Forum: Portable Headphone Amps
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Extreme low power VS Sound quality - Possible?
Hi all! I'm currently trying to come up with a portable headphone amp and I'm looking for some information on op-amps. is it possible that a low power op-amp could sound good ? I need to keep the quiescent current in control ( less than 1mA from each op-amp) in order to have a really...- Firefart
- Thread
- headphone-amplifiers portable-amps
- Replies: 5
- Forum: Portable Headphone Amps
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How to properly charge and prolong the life of Lithium batteries
I use the MAX1555! of course... it is SMT but it's worth it (for single cell applications) its not that difficult to wire in a (appropriate) PCB- Firefart
- Post #45
- Forum: Portable Source Gear