Trends PA-10 & PA-10.1D Specifications
1.1 Tube Pre Amplifier Unit
| Specification | PA-10 | PA-10.1D |
|---|---|---|
| Vacuum Tube | 6DJ8/6922 series or 12AU7 series (exchangeable) Standard Edition: Chinese 6N11 Tube SE Edition: Russian 6H23n GE Edition: USA 12AU7 Tube |
|
| Output Stage | MOSFET x 2 | |
| Amplification Gain | x3 (for Audio CD/DAC IN) x6 (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 | Two Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.] AND Audio PC/iPod IN RCA (Left/Right) x 1 [0.55Vpp max.] Power Socket (5.5mm/2.1mm) x 1 |
Two (switchable) Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.] Or 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 |
Audio OUT RCA (Left/Right) x 2 Headphone OUT (3.5mm) x 1 |
| Other Switch & Knob | Audio IN selection switch x 1 Power ON/OFF switch x 1 Power Indicator (Blue LED under Tube Socket) x 1 Volume Knob x 1 |
|
| Power Supply | DC 24V-26.5V (max.) | |
| Dimensions (DxWxH) | 114mm x 76mm x 46mm [case only]/145mm [incl. sockets & knob] | |
| Front Panel | 1.5mm | 4mm |
| System Package | Combo 1 | BA-10 Bi-amp |
| Weight | 380g | 400g |
| Remark | Provide all functions of Tube Headphone Amplifier | |
1.2 Tube Headphone Amplifier Unit
| Specification | PA-10 | PA-10.1D |
|---|---|---|
| Vacuum Tube | 6DJ8/6922 series or 12AU7 series (exchangeable) Standard Edition: Chinese 6N11 Tube SE Edition: Russian 6H23n GE Edition: USA 12AU7 Tube |
|
| Output Stage | MOSFET x 2 | |
| Amplification Gain | x3 (for Audio CD/DAC IN) x6 (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 | Two Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.] AND Audio PC/iPod IN RCA (Left/Right) x 1 [0.55Vpp max.] Power Socket (5.5mm/2.1mm) x 1 |
Two (switchable) Audio CD/DAC IN RCA (Left/Right) x 1 [3Vpp max.] Or 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 |
Audio OUT RCA (Left/Right) x 2 Headphone OUT (3.5mm) x 1 |
| Other Switch & Knob | Audio IN selection switch x 1 Power ON/OFF switch x 1 Power Indicator (Blue LED under Tube Socket) x 1 Volume Knob x 1 |
|
| Power Supply | DC 24V-26.5V (max.) | |
| Dimensions (DxWxH) | 114mm x 76mm x 46mm [case only]/145mm [incl. sockets & knob] | |
| Weight | 380g | 400g |
1.3 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 (DxWxH) | 78mm x 50mm x 33mm |
| Weight | 150g |
Accessories
Tube x 1
User Guide x 1
Warranty Card x 1
Optional Accessories: Trends PW-10 PSU
| AC Power Input | 110V /50~60 Hz or 220V /50~60Hz (specific model should be selected, not compatible) |
|---|---|
| DC Power Output | PA: +24V/420mA |
| AC Input Socket | IEC socket |
| DC Output Socket | DC 2.1 socket |
| Dimensions (DxWxH) | 205mm x 105mm x 55mm |
| Weight | 1.8 KG |
| CE | Approved |
PA-10 Packing List
Trends PA-10 Tube Headphone/Preamp (body) x 1
Tube x 1
24V AC Adaptor x 1
User Guide x 1
Warranty Card x 1
PA-10.1D Packing List
Trends PA-10.1D Tube Headphone/Preamp
Tube x 1
24V AC Adaptor x 1
User Guide x 1
Warranty Card x 1
Warranty
Two years parts and labor. Tubes are guaranteed for 1 year.
Regulatory Compliance
CE Class B
FCC Class B
Canada ICES-003 Class B
* PA-10, PA-10 SE and PA-10 GE use the same body.
* To continuously improve our product, we reserve the rights to change some specifications without further notice.
| Date | Magazine logo | Reviewer / publication | Read More | Review quote |
|---|---|---|---|---|
| 2009-02-15 | ![]() |
Nick Whetstone, TNT-audio.com in Italian | Read More | "PA-10 è dunque promosso…" |
| 2009-02-15 | ![]() |
Nick Whetstone,TNT-audio.com in Englsh | Read More | "it's a thumbs up for the PA-10" |
| 2009-03-15 | ![]() |
Ghislain Prugnard at French What Hi Fi Magazine | Read More | "C'est certainement un des meilleurs amplificateurs pour casque que nous ayons ecoutes ces demiers mois.." |
| 2009-06-08 | ![]() |
Stuart Andrews at Trustedreveviews.com | Read More | "the price/performance ratio on the PA-10 is hard to beat. " |
| 2009-06-15 | ![]() |
Todd Arthur, affordableaudio.org. | Read More | "…the most economical way to enter the world of true high fidelity headphone system" |
| 2009-07-15 | ![]() |
Astor Ng, AVMagazine | Read More | "震音能完完全全清楚感受到,整體上三度空間感更大,而人聲同樣相當突出.." |
| 2009-09-15 | ![]() |
Richard Austen, Dagogo.com | Read More | "I would say this is a good decision in a headphone system." |
| 2009-09-15 | ![]() |
Ljubisa Miodragovic, Hi-Files Magazine | Read More | "Hrabra ideja.Dinamika. Prilično čista zvučna slika…" |
| 2009-10-06 | ![]() |
Florent GALLI , thresholdlovers.com in English | Read More | "PA-10 is a surprise. It is so brillant that you can challenge all the great preamplifiers." |
| 2009-10-06 | ![]() |
Florent GALLI, thresholdlovers.com in France | Read More | "et bien c'est vraiment une surprise. Il est presque aussi doué que la plupart des grands préamplificateurs du marché actuel…" |
| 2009-10-15 | ![]() |
Nick Whetstone, TNT-audio.com in English | Read More | "It surprised me a little just how much improvement the change of valve made." |
| 2009-10-15 | ![]() |
Astor Ng, AVMagazine | Read More | "外形小巧得如手掌般大小…" |
| 2009-10-18 | ![]() |
Vincent Caponi at Stereomojo.com | Read More | "Trends PA-10 Tube Preamp is an affordable and compact hybrid Swiss army knife type of preamp. " |
| 2009-11-08 | ![]() |
Eitan Abar at hometheater.co.il | Read More | " הסט נשמע טוב ואף יותר מכך. לא אכחיש שעבר אצלי ציוד יקר שאליו פחות התחברתי.כמו כן " |
| 2009-11-15 | ![]() |
Roger Kanno, GoodSound.com, | Read More | "I heard the same bold, luxurious sound when... plugged into the PA-10 SE's headphone jack." |
| 2009-12-01 | ![]() |
Steve Hui, Apple Daily Newspaper, | Read More | "發燒音響, iPhone膽味濃…" |
| 2010-01-18 | ![]() |
Korean Version at naver.com | Read More | “a micro-system of separates, it should certainly be something to consider…” |
| 2010-01-20 | ![]() |
Andre Marc at avrev.com | Read More | “…the sound was very enjoyable…The PA-10 is offers users on a budget a fun and versatile piece of equipment” |
| 2010-01-27 | ![]() |
音響專家劉達仁,《電腦廣場PC Market 》 | Read More | “Trends PA-10膽色….讓擴音機本身多了一份發燒味道” |
| 2010-01-29 | ![]() |
音響專家Kan Keung, 《e-Zone 》 | Read More | ““iPod 膽機聽得很Classic…Trends Audio PA-10膽細聲大” |
| 2010-02-05 | ![]() |
Rolf-inge Danielsen, Fidelity Hi-Fi Magazine in Norway | Read More | “Trends som i tillegg til å være rimelige og kompakte også låter godt !” |
| 2010-03-06 | ![]() |
Matej Isak, monoandstereo.com in Austria/Slovenia | Read More | “Trends Audio PA-10 is a mighty machine.With it's open, dynamic and involving character it will give hours of listening fun” |
| 2010-03-22 | ![]() |
Bohus Blahut, Retrothing.com in U.S.A | Read More | “The PA-10 brought a dramatic difference…” |
| 2010-05-29 | ![]() |
Nick Douris at Abouthifi.com | Read More | “Trends PA-10, Tremendous value-for-money…“ |
| 2010-08-10 | ![]() |
梁淑欣 at《AV雙周 》 | Read More | “膽耳擴從基本玩起 Play from Basic…” |
| 2010-10-27 | ![]() |
Martin H. Sabag at Hometheater.co.il in Hebrew | Read More | "צליל: גבוהים, נמוכים, הפרדה, נקיון ועוצמת הווליום. הצליל חם יותר ונעים יותר לשמיעה |
| 2010-10-27 | ![]() |
Martin H. Sabag at Hometheater.co.il in English | Read More | " Warmer sound more pleasant to hear...." |
| 2011-04-20 | ![]() |
Gerard Rejskind in UHF High Fidelity Magazine Canada | Read More | “…. with solid percussion and rich cellos and double basses.” |
| 2011-10-15 | ![]() |
Greg May at TrulyGadgets.com | Read More | “…. . "...it's hard to argue with two inputs in a tube amp for under $300" |
| 2012-01-05 | ![]() |
Nick Whetstone at TNT-Audio.com | Read More | “…. I would say that it is worth spending the extra money for it.” |
| 2012-02-14 | ![]() |
John Alex Hvidlykke on Gear Magazine in Denmark | Read More | "... Trends Audio PA-10.1D is an amazing little amp that's perfect for the office facility” |
| 2012-03-16 | ![]() |
Lieven Vranken at headfonia.com | Read More | “…the sound stage is very spacious, transparent and airy and you get a very clean sound” |
| 2012-07-03 | ![]() |
S. Andrea Sundaram at GoodSound.com | Read More | “…. flexibility, combined with well-executed circuitry and very respectable build quality” |
| 2012-12-18 | ![]() |
野村at ITmedia.co.jp | Read More | "... want to enjoy better sound”" |
| 2013-02-22 | ![]() |
Yago at oldnewsound.blogspot.com.es | Read More | “... with good sound and all at a price (265 euros) "affordable"” |
| 2013-04-11 | ![]() |
Fabio Barbato at Remusic.it | Read More | “... The listening experience has been very pleasant.” |
| 2013-08-26 | ![]() |
Paul Dmitryev at appleinsider.ru | Read More | “... a very good choice.” |
| 2013-10-01 | ![]() |
Marcus Downey at headfonics.com | Read More | “…pretty robust and durable” |
Trends PA-10 versus Trends PA-10.1D
Model specifications reproduced from the original Trends Audio comparison. Prices below are the source page’s listed MSRP in USD, not current store prices.
Trends PA-10, PA-10 SE and PA-10 GE
Click any photo to open its full-size image.
Remarks
* SE = Special Edition and uses a Russian 6H23n tube and ALPS volume potentiometer.
* GE = GE version and uses a USA 12AU7 tube and ALPS volume potentiometer.
PA-10, PA-10 SE and PA-10 GE use the same body.
PA-10.1D SE and PA-10.1D GE use the same body.
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 PA-10 Bias Setup guide
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 PA-10 Bias Setup guide 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).11. How do I set up the bias for PA-10?
Please read the PA-10 Bias Setup guide for jumper settings, DC bias tuning instructions and pictures. For professional users only.
















































