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Best Audio Component Preamplifiers

TaoTronics Bluetooth 4.1 Transmitter / Receiver, Wireless 3.5mm Audio Adapter (aptX Low Latency, Pair 2 At Once, For TV / Car Sound System, Volume Control)
Pure, Unaltered auditory experience: aptX audio codec provides CD-like audio quality wirelessly.
Reviews
"Upon opening the box, the unit was much smaller than I thought it would be, but it packs a lot of goodness in a tiny shell. I highly recommend this product if you want to be able to watch tv, play games or listen to music without disturbing the family."
"Now all I have to do is pair the Bose QC35 the first time, turn off the BT switch while charging, then after they are completely recharged, I just turn them back on and they re-pair automatically."
"I have connected the device to a TV and I am transmitting to a Bose QC35."
"Too long, I have been hearing my wife telling me to turn the volume of the TV down. I have been needed an avenue so that I can still enjoy my show and not be a nuisance to her or disturb her beauty sleep. The other day, I was in our living room working and my son wanted to play his X-Box."
"I bought this to interface with my Samsung Non SmartTV only to find that the Civic has limited support for audio bluetooth to smartphones. Being able to transmit to two devices makes me want to get a second pair of bluetooth headphones so my girlfriend and I can listen at the same time."
"When you use them to receive or transmit audio from a movie, any perceived latency is a problem. Not a big factor but there is a rubberize bottom to it so when placing it on a surface (like my dash) it stays put."
"I bought this to feed the audio output from my computer sound to my GRDE bluetooth horseshoe headset at work."
"TaoTronics Bluetooth 4.1 Transmitter / Receiver and Wireless. We have a new Sirius XM home radio, which comes with no speakers. Turn on the TaoTronics transmitter."
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Pyle Phono Turntable Preamp - Mini Electronic Audio Stereo Phonograph Preamplifier with RCA Input, RCA Output & Low Noise Operation Powered by 12 Volt DC Adapter (PP444)
The ultra-low noise audio conditioning circuitry allows the preamp to boost audio to levels that are more manageable for various types of audio equipment. Features: Converts Phono Signals to Line Level Signals State-of-the-Art Circuitry Accommodates Magnetic Pickups Ultra-Low Noise Operation Improves Sound Performance Connects to Turntables and Other Studio Equipment Input Sensitivity: 3mV at 50K Ohms (Phono) Dedicated RCA and 1/4'' Output Connectors Output: 2V max (P-P) at 10K Ohms DC 12-Volt Power Adapter Included Frequency Response: 20 Hz ~ 20 KHz ±2dB S/N Ratio (A-WTD): 70 dB - Output Level: 2V THD: 0.08% @ 1KHz and 3mV Input | S/N Ratio: 70dB Input Sensitivity/Impedance/Phono 3 mV / 50K Ohms Load Impedance: 10K Ohms - Reference Voltage: 1V d Dimensions (W x H x D): 3.54" x 2.13" x 1.02" Sold as: Unit Weight: 0.85 lbs. This state-of-the-art circuitry phono preamp can accommodate magnetic pickups with an input sensitivity of 3mV at 50K Ohms. It’s better to position the preamp close to the source to reduce unwanted noise and interference.
Reviews
"I had no noise but I still use it because they work great for getting rid of noise."
"My Audio Technica turntable did not have any output (though it is supposed to have an onboard pre-amp) so i wasn't getting any sound."
"Produces a strong signal for the vintage turntable to the Aux In jack on the bookshelf system."
"This product performs EXACTLY as described in the description."
"I had called the Pyle tech support line to verify I had it hooked up correctly."
"On the other hand, while it works it does a good job."
"WTH?"
"Loud buzzing from speakers."
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Pro-Ject Phono Box MM DC Phonograph Preamplifier,Black
Since many modern amplifiers no longer have a dedicated phono input, the phono box mm from Pro-Ject is the perfect addition to your turntable setup. Compatible with moving Magnet phono cartridges.
Reviews
"This works great, at least with my Pro-Ject Debut Carbon DC turntable."
"It enables me to listen to my vinyl for the first time in a long time."
"This device works like a charm."
"packaged perfectly, arrived on time, and sounds great with my Pro-Ject Debut Carbon DC turntable!"
"Worth the price."
"Works great. Plug and play."
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Best Home Audio Receivers & Amplifiers

Mpow Bluetooth Receiver, Streambot Bluetooth Adapter & Hands-Free Car Kits, Mini Wireless Music Adapter for Home/Car Stereo Audio System,Black
How to Use: 1.Power on/off Power on: Press the multifunction button about 3 seconds until the blue and red indicator lights start flashing alternately. 3.Pairing: (1)Before using the receiver first time, please be sure to have it fully charged. (2)Connect Mpow with your car stereo. (3)Press the multifunction button about 3 seconds until the blue and red indicator lights start flashing alternately. (4)Turn on the Bluetooth function of your phone. (5)Search for the Bluetooth devices and select “MPOW”. (6)If there is needs a code, please enter “0000”. (7)If pairing is successful, the blue indicator light would flash slowly. DUAL-LINK CONNECTION & WIDE COMPATIBILITY : Mpow could connect two Bluetooth devices at once and the Bluetooth range up to 30 feet in open space without obstacles.And it also could compatible with most Bluetooth enabled devices like smartphone, MP3, tablet, etc, ideal for home or vehicle audio systems.
Reviews
"Your music will be a little quieter and not as bassy as it is when you use an auxiliary cable to connect directly to your device. Even so, this device is an ideal solution for the target demographic - folks that just want to eliminate that auxiliary cord and stream audio to their radio via bluetooth without breaking the bank. Update 12/29/2014: I had previously rated this as a 4-star device - because of the loss of audio volume/fidelity...but after an 8 hour road trip and the device lasting the ENTIRE trip and then some...I'm bumping my rating up to 5-stars."
"You'll need to power it off or disconnect bluetooth when you leave vehicle or you'll miss calls or continue streaming media. I might add this, for I found audibility as an issue in a different review; The sound is LOUDER than using an auxiliary cord or just listening to the radio! Just make sure you long press (hold the + button) the volume all the way up until it beeps, then turn your device all the way up and adjust as needed with your radio controls."
"I am ALWAYS listening to music in my car (I have a 2008 chevy) and have always used an auxiliary cord to connect my phone (iPhone 6plus) to my stereo. Turned on the Bluetooth option on my iPhone 6plus held the multifunction button down for 3 seconds and selected MPOW under my Bluetooth settings in my phone and plugged the little guy in!"
"My audiophile friends told me it was a stupid idea to buy this to make my Audio-Technica m50x headphones wireless."
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Best Audio Component Amplifiers

Mpow MBR1-Mpow1 Bluetooth Receiver, Streambot Bluetooth Adapter & Hands-Free Car Kits, Mini Wireless Music Adapter for Home/Car Stereo Audio System,Black
DUAL-LINK CONNECTION & WIDE COMPATIBILITY : Mpow could connect two Bluetooth devices at once and the Bluetooth range up to 30 feet in open space without obstacles.And it also could compatible with most Bluetooth enabled devices like smartphone, MP3, tablet, etc, ideal for home or vehicle audio systems.
Reviews
"Your music will be a little quieter and not as bassy as it is when you use an auxiliary cable to connect directly to your device. Even so, this device is an ideal solution for the target demographic - folks that just want to eliminate that auxiliary cord and stream audio to their radio via bluetooth without breaking the bank. Update 12/29/2014: I had previously rated this as a 4-star device - because of the loss of audio volume/fidelity...but after an 8 hour road trip and the device lasting the ENTIRE trip and then some...I'm bumping my rating up to 5-stars."
"You'll need to power it off or disconnect bluetooth when you leave vehicle or you'll miss calls or continue streaming media. I might add this, for I found audibility as an issue in a different review; The sound is LOUDER than using an auxiliary cord or just listening to the radio! Just make sure you long press (hold the + button) the volume all the way up until it beeps, then turn your device all the way up and adjust as needed with your radio controls."
"I am ALWAYS listening to music in my car (I have a 2008 chevy) and have always used an auxiliary cord to connect my phone (iPhone 6plus) to my stereo. Turned on the Bluetooth option on my iPhone 6plus held the multifunction button down for 3 seconds and selected MPOW under my Bluetooth settings in my phone and plugged the little guy in!"
"My audiophile friends told me it was a stupid idea to buy this to make my Audio-Technica m50x headphones wireless."
"When comparing a direct aux cable's sound quality to this bkue tooth device, there was only a difference of about 2-4 levels in volume. In otherwords, when the direct aux cable is at volume 39, this device will sound similar at maybe 42/43-ish."
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Best Audio Component Receivers

Yamaha R-S202BL Stereo Receiver
Yamaha, the most trusted brand in home audio, adds Bluetooth compatibility in this Hi-Fi receiver for easy wireless access to streaming music services and music on your smartphone or other devices. Positioning the power transformer near the amp circuit reduces power loss while improving peak power supply capacity to enable high volume output.
Reviews
"Originally purchased the cheaper Insignia model with basically the same features. I put in on my deck to be a part of my outdoor entertainment center."
"Works to specifications and a good buy."
"I just needed a receiver to connect to via Bluetooth to play music on and this Yamaha did the trick."
"Very happy with this receiver works good with the pyle speakers I have out on the deck!"
"I bought this audio receiver mainly for the Bluetooth feature."
"I was surprised to see a Yamaha product at this price level."
"Great product for the price.Would recommend.This is our first time purchasing a Yamaha receiver and are very happy,next time we would like to try a surround sound receiver."
"I would have sworn that it said it had a phono hookup on it, but it does not."
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