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Small and powerful amplifier plays straight from your phone over bluetooth, on any speakers.

Thank you for checking out the BluAmp Bluetooth Amplifier on Kickstarter! We are so excited to show you what we have got.

THE NEW HI-FI

Times have changed. Almost everyone has replaced their CD library with a digital music library and their radio with Internet radio. Instead of hauling around discs and boom boxes, everything is accessible in that tiny little music player in your pocket that doubles as a phone. The BluAmp brings your music to life, and plays it out loud with crisp highs, heart pounding bass, true stereo separation and all the rich detail of a live performance.

Once you pair the BluAmp with your Smartphone over Bluetooth, it never needs adjustment and is always in standby ready to go with no wires and no fuss. All you need to do is walk into the reception radius to hear your music in full fidelity on the BluHifi speakers. The depth of sound, rich bass and sparkling highs will amaze you.

USE ANY SPEAKERS, EVEN A SUBWOOFER

The BluAmp is built to connect to any speakers. Revive those hifi speakers you bought in college, or pair it with a set of brand new mighty BluHifi bookshelf speakers. You can even drive your favorite brand of full size high fidelity speakers with this little wonder. 

At BluHifi we know that building an excellent speaker is really difficult, and the speakers often make or break the listening experience. That's why we designed the BluAmp to drive any speaker, and gave it enough power to rock even the biggest.

Powerful enough for any speakers
Powerful enough for any speakers

We listened to our customers and added a subwoofer output, so that our Hip-Hop, R&B and Crunk fans can really get low.

HIGH QUALITY SOUND

The whole point of choosing your own speakers is to get better sound, so we didn't compromise on any of the amplifier components. The BluAmp uses the latest generation Bluetooth processor for the best possible wireless sound, and will even automatically turn on apt-X if your phone supports it for high definition sound you won’t believe. We added a high efficiency digital amplifier with very low distortion and plenty of headroom for crystal clear sound. 

Beautiful Sound
Beautiful Sound

HIGH POWER

Even the nicest speakers distort when there isn't enough power, so we made a high power version of the amplifier for those who like it loud as well as those who listen at moderate levels and want very pure sound. The BluAmp has the headroom to play the music and keep it clean when the cymbals crash and the cannons fire. The BluAmp 20 has 20 Watts RMS per channel.The BluAmp 50 is rated at 50 Watts RMS per channel, and adds speakerphone capability and bass and treble control. 

BLUHIFI BOOKSHELF SPEAKERS

Great sound is influenced more by the speakers than any other component in an audio system. The BluAmp will run any speakers, but to really hear the crisp and clean sound of the amp you need very high quality speakers. Don't let the small size fool you, the BluHifi bookshelf speakers pump out room filling sound, crystal clear highs and solid tight bass. We used the highest quality dome tweeter and long throw woofer, and balanced them for sound so accurate it is like having the musician in the room with you. We finished them in piano black and used 5-way binding posts for the best audio connection.

PHONE CONTROL

The BluAmp pairs with your Bluetooth cell phone or music player just like a pair of headphones, so you have complete control of the sound from the palm of your hand. The amp responds to the phone volume control, and you can pick the music from the app you already use for your music. You can even use the equalizer feature of your phone to get the sound exactly right.

Phone applications like Pandora, IHeartRadio, and iTunes radio work too, so you aren't limited to a single, limited application.

SPEAKERPHONE

We added MEMS microphones for top notch speakerphone quality, to make it easy to answer your phone while listening to music. You don't even need to get off the couch to answer the phone or share a conversation.

DESIGN

We designed the BluAmp to be as small as possible without compromising audio quality. The amp is simple but elegant, and has a tiny footprint so that you can put your hi-fi where you want it, not just where it fits. 

Small as a kitten. Power of a lion.
Small as a kitten. Power of a lion.

LIFESTYLE

This little amp fits nicely in almost any room in the house, here are a few examples:

  • Bedroom - Put the amp and speakers on the dresser, and you can control the music completely from bed. The amp even goes to sleep when the music stops, and you can charge and play your phone right from the nightstand.
  • Kitchen - Play pandora straight from the computer or the phone in the most used room of the house, and answer calls on speaker.
  • Living Room - Play your full size speakers from the couch.
  • Backyard - Power those outdoor speakers and let the backyard party begin. Go ahead, wake the neighbors!
  • Studio, Shop or Gym. Start the music, then get dirty. The BluAmp shuts off as soon as you leave the room and is literally hands off.
  • Office - The BluAmp is small enough to respect your limited desk space. Whistle while you work.

BLUAMP 20 SPECIFICATIONS

Bluetooth 4.0 with apt-X, backward compatible

Class-T digital amp with volume control

20 Watts RMS x 2 into 4 ohms

THD+N < 0.03% at 10W

120-240V external power supply

Stereo mini jack line input

5-way binding post speaker output

2.75W x 5.75H x 4.75L (inches)

BLUAMP 50 SPECIFICATIONS

Bluetooth 4.0 with apt-X, backward compatible

Class-D digital amp

50 Watts RMS x 2 into 4 ohms

THD+N < 0.03% at 10W

Volume, bass, treble and track control

Dual MEMs microphones for speakerphone 

120-240V power input

Stereo mini jack line input

5-way binding post speaker output

Subwoofer line output RCA jack

2.75W x 5.75H x 7.25L (inches)

BLUHIFI BOOKSHELF SPEAKERS

1” Dome Tweeter

4” long throw kevlar woofer.

20Hz- 20kHz frequency response

SPL 87db

Piano black finish

6W x 10H x 7.25L (inches)

OUR STORY

The principal engineers at BluHifi have worked on many multi-room audio products for the ultra-rich over the past 20 years. The team lamented over the fact that it was so expensive to get good sound in different rooms in a home. After hearing the great sound quality of the latest Bluetooth a few years ago, we decided to make a sound system that anyone could afford and play right from their phone. We couldn't find any good and small amplifiers on the market that worked with external speakers, so we decided to build one.

Early amplifier design ideas
Early amplifier design ideas

We started by building some prototypes. We sourced several different digital amplifier reference designs, and tested them all. We sourced several Bluetooth modules, and while testing we found that the Bluetooth chipset is critical for phone compatibility as well as the best possible sound quality. 

Once we selected the major components, we also began evaluating manufacturing partners. Having done this before, we know that design for manufacturing is imperative to keep the costs low and the quality high. We selected a manufacturing partner in China that is capable of both surface mount circuit board assembly and final assembly, and high volume if needed. Since our partner can build complete units, we can focus our efforts on engineering the highest quality product.

Mechanical drawings and schematics
Mechanical drawings and schematics

We got straight to work on drawings for the mechanical design and schematics and layout for the circuit boards. We started work early with our manufacturing partner, and had them build the first prototypes in order to streamline the production process up front. Our first boards worked, and we were very happy with the quality.

Pre-production Bluetooth preamp circuit board and amp
Pre-production Bluetooth preamp circuit board and amp

Our first set of prototypes were completed in late 2012. Our first product was bigger than we had hoped, but it worked. We paid close attention to the feedback we received, and made our product better. We also added a budget friendly, low power version of the amp to make it easier to afford. 

We built our second round of prototypes with an improved preamp board design using our production supplier, and are very happy with the sound quality. We are finally ready to go with production, and are excited to see the response.

PRODUCTION PLAN

We are very confident with our design, but we need your help to make our first production run. We need to meet minimum order quantities on some parts for the BluAmp, so every amp ordered gets us closer to the goal. Larger quantity orders also make it possible for us to get the cost down so that we can offer the amp at such a low price.

We are making some final adjustments to hardware and firmware in January, and then it is up to our factory. The hardware has been tested, and the amp and preamp work well. We need to change the footprint of two voltage regulators for the production preamp board so that they can handle higher current. Both enclosures need updated silk screen drawings. Firmware is complete for the hardware verification test, and all the user controls and LED controls have been implemented. An update is needed to simplify pairing and refine the tone controls. 

Our factory has already built our surface mount preamp boards and all of our prototypes. By using our factory to build our prototypes, we have proven the process and have a good handle on what still needs to be done for a smooth production run.

WHAT OTHERS ARE SAYING

We really appreciate the reviews and press we are getting. Here are just a few:

http://www.gizmag.com/bluhifi-bluamp-kickstarter/30244/

http://www.berkeleysg.com/crowdfunding/crowdfunding-spotlight/bluamp-bluetooth-amplifier/

http://techwayjunkies.blogspot.com/2014/01/the-amp-of-music.html

STRETCH GOAL $100K - POWER SUPPLY UPGRADE

If we reach $100,000 we will upgrade the power supply on all the BluAmp50 units. This means if you pledged for a BluAmp50, you will get the upgraded power supply if we meet our stretch goal of $100K. The upgraded power supply has higher quality components and larger capacitors for clean power with reserve for extended listening at high volumes. 

Risks and challenges Learn about accountability on Kickstarter

Our biggest risks include:
- Final design changes
- Production delays
- Compatibility

We have completed and tested the hardware and the software. We don't expect the final design changes to cause a delay, since the hardware design has been proved and the remaining changes are minor. If necessary we can update the firmware when we perform the final test on units that we receive from the factory.

We have mitigated many of the production risks by proving out our manufacturing process and working with our production suppliers from day one. Since we have worked the major kinks out of the product, our biggest risk will be supplier delays in building the product. We have second sources for many of the components, and have built extra time into our schedule, so that we can handle minor delays if they occur.

Another risk is Bluetooth compatibility and technical problems. We researched many Bluetooth components and selected the best parts. We are so confident in the parts we have chosen that we decided to guarantee compatibility. If your Bluetooth phone won't work with the BluAmp, you can return the BluAmp for a full refund.

FAQ

Have a question? If the info above doesn't help, you can ask the project creator directly.

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    BluHifi Backer T-shirt | Show your support with a Kickstarter exclusive BluHifi backer t-shirt. Every dollar counts, and even the t-shirts help us toward our goal.

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    27 backers Limited (73 left of 100)

    BluAmp 20 EARLY BIRD | Bluetooth 4.0 stereo amplifier with 20 watts RMS power per channel. Use with any speakers. Special pricing for early backers.

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    BluAmp 20 | Bluetooth 4.0 stereo amplifier with 20 watts RMS power per channel. Use with your own speakers.

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    BluAmp 50 EARLY BIRD | Bluetooth 4.0 amplifier with 50 watts RMS per channel. High efficiency digital amplifier with subwoofer output, bass and treble controls and speakerphone.

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    BluAmp 50 | Bluetooth 4.0 amplifier with 50 watts RMS per channel. High efficiency digital amplifier with subwoofer output, bass and treble controls and speakerphone.

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    BluAmp 20 Hifi Set EARLY BIRD | BluHifi bookshelf speaker pair with a BluAmp 20 digital stereo amplifier. Special pricing for early backers.

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    Amp Sampler EARLY BIRD | Get both amps - a BluAmp 50 and a BluAmp 20 for one low early bird price.

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    BluAmp 20 Hifi System | BluHifi bookshelf speaker pair with a BluAmp 20 digital stereo amplifier.

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    BluAmp 50 with BluHifi bookshelf speakers. Complete high-power set, just pair your phone and crank it.

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