Trends PA-10 GE Tube Headphone/Preamp

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Price: $265.00    

Product Feature

• ONE bi-triode 6DJ8/6922 or 12AU7 tube as voltage amplification and TWO MOSFETs as output driver which perform the warm, comfortable tube sound and in addition, guarantee the high fidelity & sufficient driving power to the next power amplifier stage.
• Provide TWO sets of switchable audio inputs. Besides the normal CD input, the PC/iPod input with higher gain is provided for small output PC/Mac/iPod/iPhone/iPad or Smartphone.
• Besides the normal audio output in the back panel, ONE headphone output in the front to drive even high-impedance audiophile-grade headphones
• Compact design (mini-size & light weight), suitable for Hi-Fi room, living room, sleeping room or even right beside your laptop computer.
• A specially designed AC power adaptor with extra low ripple & noise for Hi-Fi device is bundled for continuous power supply

Product Description

Using ALPS Volume Pot., U.S.A 12AU7 tube and have fun tube rolling with this fantastic headphone/Pre amplifier, Trends PA-10 GE Tube Headphone/Pre Amplifier includes the innovative circuit design of low voltage hybrid (tube/transistor) pre-amp to provide audiophile quality sound, compact size, and easy/safe DIYer accessibility. Pure class-A circuit provides the best sound performance for the music lover. It also supports both 6DJ8/6922 series and 12AU7 series tubes by simply switching the jumpers and you can easily change their both series tubes to enjoy the fun. "Trends PA-10 Tube Preamp is an affordable and compact hybrid Swiss army knife type of preamp". The package includes Trends PA-10 Tube Headphone/Preamp, U.S.A GE 12AU7 Tube, AC Adaptor, User Guide and Warranty Card. Here are what industry experts are saying about Trends PA-10 Tube Headphone/Pre Amplifier: 1."I inserted the PA-10 in between the UD-10 and the TA-10.2.P. The difference was immediately apparent! .... the whole system sounded much better balanced, It surprised me a little just how much improvement the change of valve made. In my original review of the PA-10, I hadn't found the 6H23n to make that much difference." TNT-Audio. 2. "the price/performance ratio on the PA-10 is hard to beat..."Awards at Trusted reviews

Trends PA-10 GE Tube Headphone/Preamp Review

This is a wonderful preamp/headphone amp with the right tube, and this version has the GE 12AU7. I originally started with the unit with the chinese 6N11 tube and gave that a try for 100+ hours. After some use, the bias was off - setting the bias equally to 16.5V helped, but the unit was overly bright and lacking low-end, especially at moderate to high volumes, and especially with headphones. A warmer JJ-E88CC tube went in - bass improved, but the sound was veiled, especially at moderately low volumes, and the headphones didn't improve much at all - I didn't give the E88CC tube more than about 30 hours.

Re-setting the J3, J4, and J5 jumpers to take a 12AU7 tube and installing, in this case, the JJ european-number 12AU7 equivalent, the difference was immediately apparent.

With the 12AU7, the PA-10 is stunning - it really opened up - solid and even through the frequency range and at all volume levels, very dynamic, excellent presence and separation both as a preamp AND with headphones (Grado 325i in this case). In this configuration, definitely a very good amp for the price.

With a multimeter, setting the bias and changing the internal jumpers is easy - with the 4 top face plate screws the top lifts off to allow access to the test points, pots, and jumpers. There is a short technical page from the Trends site that details this - in any case, this is the version of the PA-10 with a 12AU7. I should say that I don't have personal experience with this exact (GE) tube (yet), but given the other tubes I've run through the PA-10, unless I was intent on trying a number of different tubes, this is certainly the version I'd start with.

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