--- product_id: 153458203 title: "Musical Fidelity Tube Amplifier Kit - 2.0 / Stereo Tube Amp with 5.5x2.5 Power Interface Plug" brand: "qinlorgo" price: "1208592₫" currency: VND in_stock: true reviews_count: 3 url: https://www.desertcart.vn/products/153458203-musical-fidelity-tube-amplifier-kit-2-0-stereo-tube-amp store_origin: VN region: Vietnam --- # Musical Fidelity Tube Amplifier Kit - 2.0 / Stereo Tube Amp with 5.5x2.5 Power Interface Plug **Brand:** qinlorgo **Price:** 1208592₫ **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Musical Fidelity Tube Amplifier Kit - 2.0 / Stereo Tube Amp with 5.5x2.5 Power Interface Plug by qinlorgo - **How much does it cost?** 1208592₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/153458203-musical-fidelity-tube-amplifier-kit-2-0-stereo-tube-amp) ## Best For - qinlorgo enthusiasts ## Why This Product - Trusted qinlorgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Tube Amplifier Kit, 6J1 Tube Preamplifier Vacuum Tube Amplifier, 2.0 / Stereo Tube Amp Kit with 5.5x2.5 Power Interface Plug, Musical Fidelity Tube Amplifier ## Product Details - **Item dimensions L x W x H:** 5.12 x 3.94 x 0.98 inches - **Voltage:** 12 Volts (AC) - **Manufacturer:** Qinlorgo - **Mounting Type:** Surface Mount - **Brand:** Qinlorgo ## Images ![Musical Fidelity Tube Amplifier Kit - 2.0 / Stereo Tube Amp with 5.5x2.5 Power Interface Plug - Image 1](https://m.media-amazon.com/images/I/71JVI4O9v3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Low cost good preamp, good for experimental distortion pedals *by P***. on November 22, 2023* This kit is not for beginners--you have to know how to read resistor codes, and how to solder. No instructions are provided, the PCB is silk screened with the component reference designator and the value--so you have to follow the PCB closely. The schematic is not provided either, but it can be found online in several places, search for "6J1 preamp".Great value--2 tubes and 2x ceramic tube sockets plus diodes, resistors, etc.Important to note: the power is 12V AC, not DC; amps will not work with DC supply.The amp has two independent channels each with a voltage gain of about 7.5. You can connect the channels in series to get a gain of about 50 which is pretty useful.The plate voltage is around 62V because the 12VAC supply is boosted with what looks like a tripler circuit.This voltage is still pretty safe but high enough to get reasonable gain.I used it as a boost pedal for a guitar amp. It starts to distort on a single channel with about 1.6V peak-peak input, and at 2.5V p-p it starts to clip due to plate cutoff which gives the sound more crunch.If the channels are series connected, distortion is noticeable at about 0.2V p-p.I rewired the grid stopper resistor to the correct place, connected between grid and the grid leak resistor. This makes grid limiting kick in which add some more distortion--what is desired in a guitar pedal but not for a headphone amp for example.Nice low cost platform for modifying to produce guitar pedals. ### ⭐ Don't waste your time hums like crazy *by B***W on September 4, 2024* You will spend 4 times the price and it still hums. I did every mod I could find. Unless you have some very inefficient speakers. ### ⭐ Does not work!!! *by J***N on February 5, 2023* Should have trusted the reviews!!! I have tried and tried to get this AMP to work and like many others it just does not function. Soldering is good, assembly good, just does not produce the specified voltages. ## Frequently Bought Together - Tube Amplifier Kit, 6J1 Tube Preamplifier Vacuum Tube Amplifier, 2.0 / Stereo Tube Amp Kit with 5.5x2.5 Power Interface Plug, Musical Fidelity Tube Amplifier - Enclosure Protection Parts Kit Tube Preamp Box, Vacuum Tube Preamp Box, for 6J1 Valve Preamp Board --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/153458203-musical-fidelity-tube-amplifier-kit-2-0-stereo-tube-amp](https://www.desertcart.vn/products/153458203-musical-fidelity-tube-amplifier-kit-2-0-stereo-tube-amp) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-05*