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PA-10 Tube Headphone/Pre amplifier

[Description] [Features] [Specifications] [Reviews] [Bi-amp] [Bias Setup] [Download] [Comparison] [Gallery] [Video] [FAQ] [Buy Now]

FAQ

1. Can Trends PA-10 Tube Headphone/Pre amplifier be the Phono Amplifier ?

No. Trends PA-10 Tube Headphone/Pre amplifier does not support RIAA.

2. What are the difference between CD Input and PC/iPod

The CD is normal input. The PC/iPod input with higher gain is provided for small output Phono amplifier or PC/Mac/iPod.

For example:
CD Input: Standard gain = 3 x
Phone Input: Hi gain = 6 x

3. It is very loud, boom with flabby bass when I turn on Trends PA-10. Why ?

It is normal that the vacuum tube have to warm up for several minutes to the stable condition. The temperature is also a factor for the bias voltage.

4. I once accidentally turned on the Trends TA-10 T-amp before I turned on the Trends PA-10 Pre-amp and the tube kept blinking with an intermittent popping sound. Any explanation for that?

We suggest that you turn on the Trends PA-10 Pre-amp firstly. For example:
. Trends PA-10 Pre-amp TA-10 amp./other Power amp.
Switch On: First Second
Switch Off: Second First

5. How can I change another vacuum tube for Trends PA-10 Tube Headphone/Pre amplifier?

Trends PA-10 Tube Headphone/Pre Amplifier supports two major tube series: (1) 6DJ8, 6922, 6N11, 6H23n, ECC88, E88CC, etc…, and (2) 12AU7, 5963, 5814, ECC82, etc… If you change the tube within the same series, it needs to re-tune the DC bias voltages ONLY. If you change the tube from another series, it needs both to re-tune the DC bias voltages and re-set the jumpers. Otherwise, the tube may be burnt out.
For more details, please read Bias Setup

6. How do we set the best sound performance from the Trends TA-10 Amp and Trends PA-10 Tube preamp bundle?

Trends PA-10 Tube preamp support CD input with 3X high gain. Please refer to the following setting for the best performance from Trends TA-10 Amp and Trends PA-10 Tube Preamp

- Trends TA-10 Amp as an Integrated Amp

. Trends TA-10 Amp. Trends PA-10 Tube Preamp
Volume Control(Maximum) 12 o'clock Any level

- Trends TA-10 Amp as a Power Amp

. Trends TA-10 Amp. Trends PA-10 Tube Preamp
Volume Control(Maximum) Fix 9 o'clock

For more details, please read our Technical Note

7. Using the headphone, I only get sound in one right ear. There is a very slight sound in the other left ear.

The DC bias for the left ear channel may be incorrectly (as close as to +16.5V). Kindly refer to Bias Setup for making the balanced both ears.

8. Why Trends PA-10 tube headphone amp. provide better performance for high-impedance headphones?

High impedance phones work better with amps that can do strong voltage swings, usually tube-based for best results. Low impedance phones correspondingly are supposed to work best with amps that deliver high current, such as solid-state designs.

9. Are RCA outputs muted or not when the headphones are connected to the preamp?

Not muted and the outputs are simultaneous.

10. Do you have any suggestion if I want to change the volume control (Potentiometer) of PA-10 Tube Headphone/Preamp?

Please use ALPS RK09712200GE Potentiometer(50kBX2).