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 Phono Input
The CD is normal input. The Phono 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 = 20 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 Trends TA-10 Amplifier
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.
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 Specifications
Specifications
Vacuum Tube 6DJ8/6922 series or 12AU7 series (exchangeable)
Output Stage MOSFET x 2
Amplification Gain x3 (for Audio CD/DAC IN)
x20 (for Audio PC/iPod IN)
Signal-to-Noise Ratio (SNR) 92dB
Dynamic Range 92dB
THD+Noise 0.05% @ 10k ohm
0.15% @ 33 ohm
Input Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.]
Audio PC/iPod IN RCA (Left/Right) x 1 [0.55Vpp max.]
Power Socket (5.5mm/2.1mm) x 1
Output Audio OUT RCA(Left/Right) x 1
Headphone OUT (3.5mm) x 1
Other Switch & Knob Audio IN selection switch x 1Power ON/OFF switch x 1
Power Indicator (Blue LED under Tube Socket) x1
Volume Knob x 1
Power Supply DC 24V-26.5V (max.)
Dimensions (W)76mm x (H)46mm x (D)114mm
Weight 380g
1.2 Specification of the Trends PA-10 Tube Headphone Amplifier Unit
Vacuum Tube 6DJ8/6922 series or 12AU7 series (exchangeable)
Output Stage MOSFET x 2
Amplification Gain x3 (for Audio CD/DAC IN)
x20 (for Audio PC/iPod IN)
Signal-to-Noise Ratio (SNR) 92dB
Power Output: 3.0 Watts per channel on 33 Ohm Headphone
Frequency response: 15 Hz - 100 kHz -1db
Input Impedance: 100k Ohms
THD+Noise 0.05% @ 10k ohm
0.15% @ 33 ohm
Input Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.]
Audio PC/iPod IN RCA (Left/Right) x 1 [0.55Vpp max.]
Power Socket (5.5mm/2.1mm) x 1
Output Audio OUT RCA(Left/Right) x 1
Headphone OUT (3.5mm) x 1
Other Switch & Knob Audio IN selection switch x 1Power ON/OFF switch x 1
Power Indicator (Blue LED under Tube Socket) x1
Volume Knob x 1
Power Supply DC 24V-26.5V (max.)
Dimensions (W)76mm x (H)46mm x (D)114mm
Weight 380g
1.3 Specification of the AC Adaptor
AC Input Universal AC 100V-240V/50-60Hz
DC Output DC 24V 0.6A (15W)
DC Plug DC 2.1mm
Ripple & Noise <= 25mV
Over-load Protection 105%-150%
Over-voltage Protection 115%-150%
Dimensions (L)78mm x (W)50mm x (H)33mm
Weight 150g
To continuously improve our product, we reserve the rights to change some specifications
without further notice.