DIY Hybrid Power Amplifier Board LM1875T(12008)

Name: DIY Hybrid Power Amplifier Board LM1875T(12008)
SKU: 11573
Price: 19.50 USD
Availability: InStock
Rating: 3.50 (2 reviews)

(2 Reviews)

DIY HIFI 6J1 electronic tube hybrid power amplifier, DIY amplifier module 20W

Sold By ICStation

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DIY Hybrid Power Amplifier Board LM1875T(12008) 1

DIY Hybrid Power Amplifier Board LM1875T(12008) 2

DIY Hybrid Power Amplifier Board LM1875T(12008) 3

DIY Hybrid Power Amplifier Board LM1875T(12008) 4

DIY Hybrid Power Amplifier Board LM1875T(12008) 5

2018-03-05T09:22:41.935Z-Amplifier_1.jpg

2018-03-05T09:22:41.935Z-Amplifier_2.jpg

2018-03-01T10:49:05.380Z-12008_Amplifier kit.jpg

2018-03-02T09:49:54.238Z-12008_Amplifier kit_7.jpg

2018-03-01T10:49:05.380Z-12008_Amplifier kit_1.jpg

$19.50

On A Break

DIY HIFI 6J1 electronic tube hybrid power amplifier, DIY amplifier module 20W

Product Introduction: Power Supply Voltage: defaults double AC 18V/3A, power more than 60W (the maximum voltage should be no more than double AC 19V, and it should be no less than 18V; or the digit…

Product Introduction:

Power Supply Voltage: defaults double AC 18V/3A, power more than 60W (the maximum voltage should be no more than double AC 19V, and it should be no less than 18V; or the digital tube will be off, and the voice will get distorted; if you want to use AC 12V, you need to modify lamp filament buck resistance 2.2 ohm; then the amplifier output power will be relatively low).
Headphone amplifier/pre-output: amplification times is 0.8
Im1875t amplifier output power: typical 20W (max 30W)
Loudspeaker impedance: 4-8 ohm
Total harmonic distortion: <0.04%
Signal noise ratio: 105dB
Frequency response: 14Hz-100KHz

Component List:

NO.	Components	Silk Screen	Parameter	QTY
1.	Metal Film Resistor	R1,R3,R10,R13,R17,R18,R20,R21	4.7K	8
2.	Metal Film Resistor	R2,R4,R30,R31	1K	4
3.	Metal Film Resistor	R5-R8	47ohm	4
4.	Metal Film Resistor	R22,R23	56K	2
5.	Metal Film Resistor	R11,R14	470K	2
6.	Metal Film Resistor	R12,R15	200ohm	2
7.	Metal Film Resistor	R9	3W 47ohm	1
8.	Metal Film Resistor	R16,R19	100K	2
9.	Metal Film Resistor	R24,R26,R27,R32	22K	4
10.	Metal Film Resistor	R25,R28	10ohm	2
11.	Electrolytic Capacitor	C13,C14	47uf 10V	2
12.	Electrolytic Capacitor	C1-C4	2200uf 25V	4
13.	Electrolytic Capacitor	C5-C8	470uf 35V	4
14.	Film Capacitor	C15,C16	0.1uf 50V	2
15.	Film Capacitor	C9-C12	1uf 50V	4
16.	LM1875T	U1,U2	TO-220-5	2
17.	D667 Transistor	Q1,Q4	TO-92	2
18.	D647 Transistor	Q2,Q3	TO-92	2
19.	Audio Socket	J3,J4	3.5mm	2
20.	Terminal	J1,J2	KF301-2P	2
21.	Terminal	J5	KF301-3P	1
22.	LED	D1,D2	3mm	2
23.	Rectifier Bridge	P1	KBJ608	1
24.	Potentiometer	RP	50K	1
25.	Screw		M3*5mm	2
26.	Screw		M3*6mm	2
27.	Isolation sheet		M3	2
28.	Heat Sink			1
29.	Thermal Grease			1
30.	Nut			1
31.	6J1 Electronic Tube			2
32.	6J1 Socket			2
33.	T0-220 Insulation film			2
34.	PCB			1

Tested by partner 12voltvids

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Review Breakdown

Average Ratings

Product: (4.50)

Documentation: (3.00)

Shipping: (3.00)

Communication: (3.50)

Mikhail | May 6, 2022

Good product

A tube broke during shipping because it was in a bag with all the other individual parts, so the seller could be more careful. I asked for a replacement. I got a message right away, but I haven't received anything until today, not even an answer to my last message.

Response from ICStation | Jan. 1, 2023

Sorry for that. I have checked the order details and communication, it was indeed our fault since we did not update to you on time. There is a problem of sending the resend tube from factory last time, we just talked to them about this, I hope the factory will resend for you asap in this month.

Maxim | July 24, 2018

Great product for starting learning about amps and tubes )

Easy to assemble. Easy to run. Great kit! It's simple and has basic schematics, very adequate cost, however as finished solution it can't drive big headphones (low plate voltage) and big speakers (small radiator), also very sensitive to input voltage, because tube's heating current regulation is done by one resistor only. My 18V transformer outputs 19.3V with 233V from wall socket, and it's too much, resistor heats up to 150 C. Also I missed some not very necessary parts (one terminal, knob, stands...)
And documentation on Chinese? Seriously? Just put it in some translator or publish e-version so buyers can make it by themselves without scanning/photographing papers...

Response from ICStation | Aug. 7, 2018

Hello Maxim,
Thanks for your honest feedback.
Firstly, we're pleased to know you like this kit.
Secondly, we are sorry to cause you the inconvenience of the mentioned missing parts:( We'll offer extra 5% off for your next purchase.
As the mentioned documents, please simply ignore that. It was because the manufactor here is in China, they can only offer the Chinese version. We have tried to complete the description and asked our partners to do the video to help buyers for better understanding of that:)
By the way, if you are also interested in making videos, welcome to apply from ICStation.
Have a nice week^_^

$19.50