Koncocoo

Best Signal Converters

FiiO D3 (D03K) Digital to Analog Audio Converter With Micca 6ft Optical Toslink Cable - 192kHz/24bit Optical and Coaxial DAC
Therefore, it is important that the digital audio output of your device defaults to or can be set to PCM/LPCM output. Feature Highlights - Built-in high-performance phase locked loop (PLL). - WM8805 ultra low jitter digital receiver. - Supports up to 192KHz/24bit audio signal. - Optical and coaxial inputs with selection switch. - 2 channel standard stereo RCA output. - Indicator for digital receiving status (LOCKED). - MINI USB power supply port (AC adapter included). Converts coaxial or optical digital audio input to analog stereo output over RCA and 3.5mm mini jack.
Reviews
"I bought the Fii0 D3 to connect the TV to a set of speakers and to a headphone I use when everyone else go to bed. Its a simple problem to live with because it only lasts the short time it takes to shut off and turn on the receiver box."
"Included in the package is a small yellow sheet with a disclaimer indicating that the device does not decode Dolby Digital. Since Dolby Sound is extensively used in television programing, including commercials and old sitcoms, it is probably not the best product for this particular purpose."
"The device works great and solved my issue of converting the Playstation 3's optical output to analog."
"I recently bought a new flat screen Panasonic TV and was surprised to find that the only audio output was optical/digital, no longer the red/white RCA analog jacks that I have been using to feed my external speakers."
"I am by no means an audophile, but this little buddy helped me distinguish between 24 bit FLAC audio and 320 kbit MP3s."
"I bought this digital/analog audio converter as a gift for my brother, because he had just splurged on a high-end 55 inch LG TV but only had a 10 year old but good quality stereo-only amp to use for expanded audio."
"I moved to a new place with Google Fiber TV recently and neither the TV box nor the TV has analog outputs, so I had no way of using my Sennheiser wireless headphones."
"Why these high end televisions have deleted the simple audio out jack/plug for headphones is beyond me."
Find Best Price at Amazon
AudioQuest - DragonFly Black USB DAC/Headphone Amplifier
Breakthrough Sound, Great Versatility, Simple to Use, Generous Compatibility: Multi-Award-Winning AudioQuest DragonFly Black USB DAC/Headphone Amp Plays With Authoritative Realism Playing music on your computer, laptop, stereo, smartphone, tablet, or powered speakers becomes exponentially better, more authoritative, and stunningly lifelike with the groundbreaking AudioQuest DragonFly Black USB DAC/headphone amplifier. 32-bit ESS 9010 Sabre DAC.
Reviews
"If I just plug in my HD6xx directly into my laptop, the sound level needs to be at least 40/100 before I get sufficient volume."
"one of the best value i can find out there... even with the price of the dragonfly tail and the nice speakerwire to go to my speakers, i find this more affordable than other similar (sound) quality setup."
"The negative is that with the dragonfly the battery is drawn down more quickly."
"This dac has exceeded all expectations in terns or sound quality, build quality, upgrade process, simplicity of use... and works great with Roon!"
"I imagine it would improve sound coming from a laptop."
"Loved it while I had it."
"This is a very good DAC that works well with computers and Android products."
"It certainly improves the sound from either my laptop or my LG G4 that's for sure.However, I cannot get it to output sound to a powered speaker which is what I purchased it for whether the source is the phone or computer ?...works just fine and sounds terrific with headphones.Still,I gave it 5 star rating for sound quality.If your phone especially has a lousy sounding dac in it the Dragonfly black will yield better sound quality."
Find Best Price at Amazon
Audioengine D1 24-bit Digital-to-Analog Converter
The high-performance headphone output was designed for a wide range of headphones and will satisfy even the most demanding headphone enthusiasts. The high-performance headphone output was designed for a wide range of headphones and will satisfy even the most demanding headphone enthusiasts! Enter your model number to make sure this fits.
Reviews
"My set up includes: 2012 Mac Pro with Audioengine long USB cable to this DAC. Then I have my Swan M10 speakers hooked up the back of the D1 then I also have my Beyerdynamic DT770's when I want to listen on my headphones."
"So I am at home for summer break and am currently using bose computer speakers but at my apartment i have some audio engine a5+s."
"Great DAC at a great price."
"One thing I do notice is that it will occasionally shut-off although that could be my usb hub (amazon 10 port).. other than that it's been a great DAC although my friend just bought it from me so I will update when I have another to compare it to."
"Upon listening with the D1 hooked up for the very first time, music sounded very crisp and almost overly defined. As well, I can almost "locate" instruments when listening to music (the violin section is over there. The only way I can describe the sensation was that I was listening to a flat wall of sound. A nice bonus is that there is no external power supply to make the D1 sing."
"One suggestion is that to tell the difference of a DAC, you'd better to have a headphone at lest as expensive as this DAC first."
Find Best Price at Amazon

Best Signal Components

FiiO D3 (D03K) Digital to Analog Audio Converter With Micca 6ft Optical Toslink Cable - 192kHz/24bit Optical and Coaxial DAC
Therefore, it is important that the digital audio output of your device defaults to or can be set to PCM/LPCM output. Feature Highlights - Built-in high-performance phase locked loop (PLL). - WM8805 ultra low jitter digital receiver. - Supports up to 192KHz/24bit audio signal. - Optical and coaxial inputs with selection switch. - 2 channel standard stereo RCA output. - Indicator for digital receiving status (LOCKED). - MINI USB power supply port (AC adapter included). Converts coaxial or optical digital audio input to analog stereo output over RCA and 3.5mm mini jack.
Reviews
"I bought the Fii0 D3 to connect the TV to a set of speakers and to a headphone I use when everyone else go to bed. Its a simple problem to live with because it only lasts the short time it takes to shut off and turn on the receiver box."
"Included in the package is a small yellow sheet with a disclaimer indicating that the device does not decode Dolby Digital. Since Dolby Sound is extensively used in television programing, including commercials and old sitcoms, it is probably not the best product for this particular purpose."
"The device works great and solved my issue of converting the Playstation 3's optical output to analog."
"I recently bought a new flat screen Panasonic TV and was surprised to find that the only audio output was optical/digital, no longer the red/white RCA analog jacks that I have been using to feed my external speakers."
"I am by no means an audophile, but this little buddy helped me distinguish between 24 bit FLAC audio and 320 kbit MP3s."
"I bought this digital/analog audio converter as a gift for my brother, because he had just splurged on a high-end 55 inch LG TV but only had a 10 year old but good quality stereo-only amp to use for expanded audio."
"I moved to a new place with Google Fiber TV recently and neither the TV box nor the TV has analog outputs, so I had no way of using my Sennheiser wireless headphones."
"Why these high end televisions have deleted the simple audio out jack/plug for headphones is beyond me."
Find Best Price at Amazon

Best Signal Amplifiers

ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier
To get you started, we have example code for both the Raspberry Pi (in our Adafruit Pi Python library) and Arduino (in our ADS1X15 Arduino library repository) Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller's I2C port and run the example code to start reading data.
Reviews
"Works well with both Arduino and Raspberry Pi."
"Pefect for current shunts and other low output sensors."
"That said everything hooked up to my Raspberry Pi B+ I2C buss extremely easily and the well done example code is a breeze to get the ADS1115 running in single-ended and differential modes with very little effort."
"Easy to use with publicly available libraries and example code."
"The chip requires more code to support operation ... a lot more. An external power supply is a good thing: a DROC regulated voltage module (available thru Amazon) lives up to its claims, is easily powered with an older e.g. 18V laptop power supply, and thereby improves on reading precision."
"High resolution via programmable settings."
Find Best Price at Amazon

Best Comparators

Texas Instruments LM393P LM393 IC Dual Differential Comparator (Pack of 10)
These devices consist of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages.
Find Best Price at Amazon