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Laochen EL34 Single-ended Tube Amplifier HIFI EXQUIS AIQIN Class A handmade lamp amp Silver version OCEL34S OldChen

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Luxury Version Standard Version Luxury Without tube Luxury BT version
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Product Details

Manufactuer “LaoChen” have 3 brands name: “Oldchen” , “LaoChen”, “Aiqin”
So for this product, we have some amplifier maybe come with “Oldchen” words on the front plate , and others come with “LaoChen” , please pay attention,
Luxury version use better electronic component, (please find the detail in product description)
Standard version use standard electronic component,
Bluetooth Luxury version use same component than Luxury version, in additional add the Bluetooth module, than you can connect your phone to play the music

Technical parameters:

  • Rectifier : Upgrade to new special oldchen 5U4G(New)
  • preamp tubes : Upgrade Russian 6H9c ×2(NOS)
  • Power tubes : PSVANE HIFI serie EL34-B × 2, (New, Black seat)
  • Rated output power: Ultra-linear connection 10Wx2(default and recommand mode by manufacturer), triode connection 8Wx2, standard connection 12Wx2, tell us if you want to change the default connection mode.
  • Frequency response : 20Hz – 25KHz (HIFI EXQUIS 1101017)
  • Total power consumption: 115W
  • Power transformer: 160w, (96×50)
  • Output transformers: 15w x 2, import Japanese Z11 0.35mm(66×45), very important to Provide sufficient power
  • Total Harmonic Distortion : 1% (1kHz) (HIFI EXQUIS 1101017)
  • Input Sensitivity : 500mV – 2000mV
  • Input impedance : 100KΩ
  • Output Impedance : 4Ω, 6Ω, 8Ω, with about 10-100w 88db(>=) speakers
  • SNR : 88dB (HIFI EXQUIS 1101017)
  • Dimensions (W × H × D ): 380 × 160 × 230mm
  • Net Weight: about 9kg (HIFI EXQUIS 1101017)
  • Input voltage: 110v-240v 50/60hz for worldwide
  • HIFI EXQUIS offer US, EU or AU standard power cable

Standart version features:

  • Taiwan ShuangLian’s potentiometer, Nice quality potentionmeter
  • All tubes is military level NOS tube or New tube,
    Rectifier and voltage tube are Seventies Class J military level tube
  • Special HIFI levels capacitors
    German WIMA red grade fever no electrodes capacitance

    Cathode capacitance: Philips audio-specific,
  • All high-precision metal film resistors rings
  • CLC filter inductor
  • Powoer output transformer is Handmade
  • Optimized routing and Extremely low noise, (HIFI EXQUIS 1101017)
  • Gold plate connection for all connections

For Luxury version use more high level’s HIFI components like:

  • Teflon silver plated wire partially used in main path in the machine
  • ALPS’s Exponential potentiometer
  • Top HIFI levels capacitors:
  • Using BHC, Philips, RIFA or Ruby Filter capacitor. (HIFI EXQUIS 1101017 store)
  • Using USA CE,CDET or TRW Coupling capacitor
  • Using RIFA,SPRAGUE, Philips or Mallory Cathode capacitanc
  • Containing silver Solderin

She is made by the most famous Chinese brand LaoChen, and it’s the China ‘s best-selling hifi tube amplifier!

Since 2006, it has been sold more than 10,000 copies!

LaoChen is well-known brand in china, this EL34 series is already sold more 10 milles copies, it‘s the most popular tube amps, it’s used for 100w around HIFI Speakers to all music type and special for vocal chords music.
This amps’s development and marketing time has more than 10 years, it has been very mature, has received a lot of suggestions for improvement by hifi buyers, many buyers have been praised .

Real sense of hearing:

  • Bass is surging strong. ( HIFI EXQUIS1101017)
  • Middle frequency is soft and mellow voice,
  • High frequency is crisp and clear. ( HIFI EXQUIS 1101017)
  • Even used to listen to the POP or dance music can be shocking endless,
  • Bounce efforts andclear resolution makes the sound never tired.
  • Thousands of people are full of praise for this amplifier in manufacturer’s site

There are always “Aiqin” words on some below photo, but it’s not longer to use it for new amp

This tube protection cover is not included in the main product, if you want to buy it, please order it, we can send this tube protection cover with your tube amplifier by same package.

If you are looking for the tubes protection cover, please click the following photo:

The is the inside components and architecture view of LaoChen luxury version:

The is the inside components and architecture view of LaoChen standard version:

With Bluetooth version is with bluetooth 4.0, the receiver antenna is on the side of amplifier:

The Bluetooth component is like in below image:

HIFI EXQUIS(1101017) use double package to ship this amplifier:

If you want use you HIFI leve headphone with this amplifier, you could purchase a LaoChen
special tube headphone adapter:

For LaoChen EL34 Black Luxury version click:

For LaoChen 2014 new high power KT88 push-pull tube amps:

For LaoChen 300B best musical tube amps:

Tube Amplifier Precautions

1. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads(speakers) or load short circuit when the switch is ON. (Hifi exquis 1101017)

2. Too high or too low power supply voltage does irreversible harm to the amp,preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply.

3. Temperature is higher when tube amps working, placing attention to ventilation, cooling. (Hifi exquis 1101017)

4. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes.

5. You should take about 100h time to operate the amp.RUN-IN to the amp gives it’s best and stable during the first 100h use time the sound maybe is not the best,you can also use your own run-in method.

6. If you donot sure how to plug the tubes, please contact us before try it

Speakers connection

All tube amplifier used with stereo mode: L(left) and R(right) speakers.
Normally there are 6 speaker cable connectors: +8L, +4L, -0L, -0R, +4R, +8R

Example: +8L and -0L are for connecting with your Left 6-8ohms speaker
-0R, +4R is for
connecting with your Right 4ohms speaker

Tube amplifier guaranty :

Tube amplifier Guarantee: 6 months for tubes sold with amplifier, 1 year for the amplifier and PSVANE tube

Conditions of Selling
Article-1, Contact HIFI EXQUIS, Hello everybody, my name is FENG Lijun, I’m HIFI EXQUIS manager, Our team and me are always here , you are not purchasing via automate machie, but via us: real person, so thank u very much for choosing & trusting us. Our customer service is ready to help u, U can contact us any time by inside messager or by Email: contact AT or hifi.exquis AT
Article-2, Before Buying
Please read cearfuly the below conditions, because validate the order by customer is equivalent to accept the selling conditions.
Please read cearfuly the product page. If you don’t sure, contact us before buying.(HIFI EXQUIS)
Article-3, Shipping. In term of delivery: We need time to prepare the order and arrange the sent of products and dealing with china local shipping. After the International warehouse delivery, we will provide u a tracking number in 3~6 days for the international shipping. Shipping delay, please contact us for resolve this problem (HIFI EXQUIS)
Article-4, Taxe & Duties: We are not responsible for any Taxe, Duties or Customs fees, These charges are the buyer’s responsibility. In general we declare a lower value than real price. Any problem about the clerance process, Please contact us before contacting with customs.(HIFI EXQUIS)
Article-5, Delivery. (Damaged, wrong product, sound is bad, no tracking information, package lost, apparence problem, shipping delay, etc) Any problem or dissatisfaction after received product, you must contact us in first before to give a negatif feedback or open a dispute. You can open dispute only when we can’t give your a satisfied solution!
Article-6. Feedback is extremely important. If you are satisfied, please leave 4-5 stars positive feedback. Else you must contact us to resolve the problem with us.(HIFI EXQUIS)
Article-7, After Selling, Guarentee 1 year for all product, excepte some product have different guarenty time, please find detail in product page. We have 3 after selling service point: in china Shenzhen, in Europe France Toulouse, and Canada Montreal and in the future in Russia moscow , so easy to return your quarenty product (HIFI EXQUIS)
Article-8, We have not responsability of any small update of inside of product if the changing is not give any impact for the product quality. and nor for same small change on exterior of product, like remove or add some print words, change some holes on chassis, but the product is the same. So picture is not contractual .
Company Information
HIFI EXQUIS is a High Fidelity e-commerce store, we offer the exquisite equipement of Hi-Fi system and with both good quality and service. All our equipement are configured to fit with different countries and electric norms, and guaranteed you a risk free purchase and 100% satisfied.
Our store is property of Registed in ShenZhen china, for product store and shipping service;
We co-work with French company: Registed in France for Europe pre-sale and After-sales services
Have a good shopping!

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