Does anyone know where to get replacement battery for now discontinued Headroom Portable Micro AMP/DAC combo? This model utilize rechargeable lithium battery inside with a wall-wart charger. The wall-wart charger is rated to provide 9v. This model is combination both AMP/DAC inside and the size...

I have been member of the Head-fi for very long time. When I first started to use Paypal system, it went smooth for number of years. And most of the members here wanted to utilize the Paypal system due to instant payment. All these digital transactions like Paypal system is great way to conduct...

For some reason, I can't delete my PMs anymore when I tried to clean up. And I can't response to my PMs either. I have to start new PM to continue my negotiations/response.

Ever since I had a chance to listen to Millett Hybrid amp, I knew I was going to love its sound. At first, I had a basic diy MH amp. Then scored the maxxed out MH built by n_maher with STEPS and diamond buffer. I still have that amp and loving its sound. And when I first saw HR Millett Hybrid...

I recently ordered RE2 for me to try out and when it finally arrived few days ago, I was all ready to give it a try. Right out of box, I was already liking its sound signature. It has been only about two hours but since it was getting late, I put the RE2 right next to my bed and fell asleep...

I have been using HR MicroDAC with my Window XP system for PC headphone music listening. However, recently I purchased new computer with Window Vista and my MicroDAC is not working as it should be. When I plug the USB cable to MicroDAC and it tests fine through my MicroAmp and headphone but when...

Does anybody has GrandCentral invite leftover? Since I am in the Army, I travel alot and having one phone number contact will be nice for my situation. Their website said, I need an invite for me to open the account. I would appreciate greatly if anybody sends me an invite. My email address...

Does anybody know what's the maximum voltage of LaRocco's PPA? Or is it depends on opamps? I am currently running 24V to it but it seems several people actually runs their PPA higher voltage than 24V. Assuming PPA can take the higher voltage, any advantage of running at higher voltage than 24V...

After I saw this latest portable amp offering from Little Dot team, I wanted to try this amp so I ordered through David and received the amp yesterday. It contained LD MK I portable amp, english manual, mini to mini cable along with cloth pouch carrying bag. It cost me little less than $150...

It is rare for me to be home by myself. But recently, I was home alone with several hours to spare. It was perfect time for me to some equipment reviews, different power supply to the amps. We pay lots of money to have better power supplies to our amps so naturally I was curious whether this...

I always wanted to try out the Xin's Supermacro amp but loooong wait for the amp detered me from buying one. But I had a chance to buy the used Supermacro IV from other head-fier member (stevenkelby) here so I took the plunge. Steve was world class act from start to finish in this transaction. I...

Tangent's recommended resistor values for my STEPS: R1 1/4w 1M ohm R2 1/4w 100 ohm R3 1/4w 120 ohm R4 1/2w 2k ohm R5 1/4w 2.2k ohm But I can't seem to find proper 2k ohm resistor for R4 and closest resistor value that I can locate is 2.2k ohm. Can I use the 2.2k ohm instead of 2k ohm...

I just populated the Tangentsoft TREAD PS with AMVECO toroidal transformer (12V + 12V) to give me 24V but I am not getting much DC voltage between TP1 & TP3 when I applied the 120V AC voltage . It only registers 0.08V DC from multimeter. Does anybody have any idea what I did wrong? I am going to...

My computers at home just got infected with those pesky "spylocked" spyware. It will have fake security warning saying that your computer got attacked with all these very exaggerated spyware attacks and needs to buy their software to remove them. Of course it has a free download to scan your...

I recently purchased recabled Goldring DR150 from fellow head-fier but the condition of the phone wasn't stellar at first. So I saw what swt61 did to other dr150 to install woody cups for me. I also asked warrior05 to repair the recable of my dr150 as well since it has few undesirable cosmetic...

About two months ago I purchased perhaps one of the best DIY Millett Hybrid from fellow head-fi member Thaddy. This amp was built originally by n_maher. Unfortunately, the STEPS power supply was broke during the shipping route. However, n_maher was kind enough to make me a new STEPS PS and this...

I bought one of the best DIY Millett Hybrid from Thaddy (built by n_maher) recently and after the long journey to Hawaii, this amp is not powering up at all. And there is no doubt that this amp was in perfectly working condition when he shipped it to me. So something must have happened during...

My previous experience with the portable amps are Headroom's Total Airhead and Cosmic amp few years back as well as some Cmoy type varieties of amps. I haven't heard their new amps. I initally bought the Cosmic amp for portable rig and the sound was wonderful but it was little too bulky for...