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Audio Note L2 Pre-Amplifier Kit
Successor to the original Audio Note Pre-Aplifier Kit (and formerly called the M2 Pre-Amplifier Kit)
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We are pleased to announce our newly enhanced Audio Note Pre-Amplifier Kit - Its called the L2 Pre-amplifier and uses the popular M2 Power supply (6X5/ECL82) along with a dual 12AU7 Line Stage which can be hardwired or PCB along with the newly designed L2 Phono Stage (12AX7 / 12AU7).
This pre-amplifier is ideal for DIY builders looking for a top of the line classic tube Audio Kit from Audio Note.
The features are numerous including:
- Individual AN Silver plated RCA's for input and output.
- Optional Extender Kit for selector for Line only version.
- 15" wide chassis with internal Steel Shield for ultra quiet operation.
- High quality silver plated copper PTFE wire & AN Shielded cable for internal hookup
- Detailed build manual with numerous electrical checks along the way to test both RIAA and Line sections.
- Phono Stage newly designed by Audio Note's Andy Grove for ultimate in tube warmth and dynamics.
- Optional Upgrades of resistors, electrolytic & film capacitors, silver shielded cable.
- Multiple Volume pot and attenuator configurations:
- The kit ships with an ELMA selector and a NOBLE Volume pot - we have added extra holes to the chassis along with various faceplate configurations that allow the builder to experiment with higher grade stepped attenuators in either stereo or mono configs for LEFT / RIGHT control (see Control Options below).
The new optional L2 Phono Stage designed by Andy Grove yields a perfect RIAA curve using a 12AX7 input and 12AU7 output (optional output tube available in a 6922/6DJ8 configuration).
Click here to view a low resolution/fast download version of the L2 Pre-amplifier Construction Manual.
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Control Options
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We are shipping the kit with a Noble Pot and a little PCB which makes for easy connection - A number of customers have wanted to use more exotic stepped attenuators, balance controls, along with stereo and mono controls.
It is possible to fit either one stereo or two mono potentiometers to the L3 Line Pre-amplifier - the choice is yours and we have the correct front panel to accomodate either configuration.
A number of makes are available to you including Goldpoint and DACT etc. (amongst others). The pictures below show Goldpoint and DACT stepped attenuators.
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Input Selector Extender Option (Line-only Version)
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We have also added a very high quality extender kit for the ELMA selector with a custom made bracket for the ultimate in short length leads and high quality switching.
Normally, a pre-amplifier's input selector switch is physically situated on the front panel. This means that all of the inputs have to be routed quite a long way. Our solution is to use an extender. This allows the switch itself to be mouted closer to the input sockets so that much smaller lengths of wire can be used to connect to it.
The extender kit can only be used with the line-only version as there is no room with the phono board fitted.
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General Specification
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1xPhono Input and up to 5 additional line level inputs |
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Two sets of Main outputs |
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Volume and 6-position selector switch |
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15" wide, 16" back to front, 5.75" height including height from floor |
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55db (Note Phono signal travels through phono & Line stage for total gain of 55db) |
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300mv |
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47K ohms ( adjustable ) |
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54db |
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23db |
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100K |
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3K ohms |
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0.2% @ 1V output |
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88db |
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Generalized Phono Stage Schematic (one channel)
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More Pictures
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Click on an image below to zoom-in or cycle through the images using the arrow buttons below.
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AudioNote Kits is now able to offer a good quality auto-ranging digital multimeter that you can use to test your kit during and after the build. Along with the test CD's that we provide with the kits, you will be able to do accurate DC, AC and resistance checks with your multimeter optionally supplied with the kit to assure a correctly working unit. The unit is very easy to use with a simple click to change from AC to DC to ohms and we will explain how to use the meter in the documentation. Please enquire about one if you don't already own a meter. Click here for more information. |
...The preamp is sounding superb and is very quiet, no audible hum or buzz. What I noticed at first listen was the bass weight this preamp provides. The bass is very deep and tight and provides a great foundation for the music. I thought my speakers were fairly good, but now I think I'm hearing their full potential for the first time. The sound is very balanced top to bottom, images are large and nicely positioned in the sound stage and the soundstage is also wide and deep. The dynamics are perfect and there is a certain cohesiveness to the music that is hard to describe. I think maybe the top notch parts and the power supply of this preamp have plenty to say about the sound...
| Paul Hopkins |
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Once I turned on the L2 pre-amplifier, I was amazed by a far more open sound stage, all instruments and voices were well balanced and clearly defined. Sound waves were floating in the air, adding another dimension. The sound was much more detailed and clear, almost pristine. The bass was more tight and focused and the tweeters came alive under the jazz brushes: I never heard them so clearly. Clarity, details and a warmish side characterize this product. Musically, it was fascinating to hear the music I'm used to and discover the details I missed before. I was unable to turn the power off for hours, the sound was so sweet, no harsh or metallic aspects, just flawless in every detail and very well equilibrated.
There is absolutely no hum when both volume pots of the amplifier and the pre-amplifier are turned towards maximum. The cosmetic of this product is also really pleasant, thanks to Brian for consistently improving and refining his kit products.
Igor Bilot
Finished L2 Pre Kit and listened to music last night. All I can say at this early point is WOW, this pre has a sound stage deep and wide.
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