LaoChen 845 Tube Amplifier HIFI EXQUIS Single-Ended Class A 300B 6SN7 Driver Flagship Lamp Amp

LaoChen 845 Tube Amplifier HIFI EXQUIS Single-Ended Class A 300B 6SN7 Driver Flagship Lamp Amp
  • Vendor HIFI EXQUIS
  • Volume Retail sales 0 piece
  • Original Price US $1199.00piece
  • Last Price US $935.22piece
  • Shipping Free Shipping
  • Save US $263.78piece22% off
  • Product Rating 3.0

Tags: laochen, tube, amplifier, hifi, exquis, single, ended, class, 300b, 6sn7, driver, flagship, lamp

You should be sure that before you purchase a LaoChen 845 Tube Amplifier HIFI EXQUIS Single-Ended Class A 300B 6SN7 Driver Flagship Lamp Amp you have previously seen and read the description of the merchandise first. This way you can be sure that you're getting the proper product that may suit your needs. Since this LaoChen 845 Tube Amplifier HIFI EXQUIS Single-Ended Class A 300B 6SN7 Driver Flagship Lamp Amp has top quality it is among the best sellers on the market now and several people are recommending this product to their friends and family. These days the product is really affordable for nearly everyone and it’s a very good buy your money can buy. You don’t need cheaper products if it'll only sabotage your projects and can not give you the kind of quality that you need in the product. With the bigger price you could be sure that your cash will probably be worth spending in this product.

Without Any Tube version is without any tube

Luxury version option is with All Best PSVANE specially customize for Laochen B lack Plate, Gold Pins Tubes: 2x PSVANE 845-SEC, 2x PSVANE 300B-SEN, 2x 6SN7-SE(made by PVANE ): Standard version option is With PSVANE HIFI Seire 2x 845, and 2x 6SN7, 2x 300B-SE :


  • Preamp tubes: 2 x Special customize 6SN7(grey plate) or 6SN7-SE (Gold pins, black plate)
  • Driver tube: 2x Special customize 300-SE or 300-SEN (both with gold pins, black plate)
  • Power tubes: 2 x PSVANE HIFI serie 845(grey plate) or
    2 x Special customize for Laochen 845-SEC(Gold pins, black plate)
  • Output power : 25Wx2 (8 ohms),
  • Power transformer Power: 150W
  • Frequency response: 18Hz-35KHz
  • Output Impedance: 4 - 8 ohm
  • Total Harmonic Distortion: ≤ 1% (1kHz)
  • Input Impedance: 100K ohms
  • Input Sensitivity: 500mV--2000mV
  • SNR: 87db
  • Size (W × D × H): 430(W)×340(D)×280(H)mm
  • Net weight: 27 kg
  • Package weight: 30Kg
  • Input voltage for: AC 50-60hz /110-120v, 220v 230v-240V


  • Since 2 years preparation and testing , Laochen in the end release their latest flagship big power 845 tube amplifier (HIFI EXQUIS)
  • Use one high voltage transformer and one lower voltage transformer, 2 x power transformers independently supply amp, in order to ensure amplifier\'s power at the same time reduce the interference, in the absence of output feedback, the noise is controled within 1-1.5 millivolt, making the sound of the amplifier more broadly natural.
  • Using custom 6SN7 preamplifier, (HIFI EXQUIS)
  • PSVANE 300B-SE to drive PSVANE 845 high-power bile duct drive output transformer,
  • Between 300B and 845 is with stable efficient hi-fi coupling capacitors
  • Use of metal film resistors, ALPS potentiometer and hi-fi level capacitors,
  • signal amplification part use handmade scaffolding design to reduce the noise
  • The power supply part use thickened circuit board. (HIFI EXQUIS)
  • use for each high voltage and low voltage two inductance for filtering,
  • Use a delay of 30 seconds of the circuit, effectively protecting the life of the power tube.
  • Taiwan\'s high-quality dual-head dynamic VU meter,
  • Direct thermal triode 845 amp, both the performance of human voice and natural string and delicate, and also when dynamic time it\'s calm and magnificent,
  • Gold-plated connectors (HIFI EXQUIS)
  • 3 inputs source with swither (HIFI EXQUIS)
  • Free offer tubes protection grille (HIFI EXQUIS)
  • All electronic component are high level quality
  • Manufactuer Laochen is most famous Chinese brand, they have 3 brands: "Oldchen" , "LaoChen", "Aiqin" , its EL34 series is already sold more 20000 copies.

S/N Test, 85db-91db :

Power test 27w-29w:

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 <Shenzhen XinHuoBan trade Ltd> Registed in ShenZhen china, for product store and shipping service; We co-work with French company: <Neopote > Registed in France for Europe pre-sale and After-sales services Have a good shopping!