The Fosi TDA7498E is an improvement on previous Tripath-chip-style amps. It outputs more power, sounds cleaner, and has excellent clarity and rhythm - if you respect its limitations and use it with the right ancillary gear - by which I mean very sensitive speakers. This is my 4th Class-D "tripath-style" amp and each one has been better than the last. The whole concept is that a Texas instrument chip converts the signal to a gain stage directly on the silicone and the chip itself drives your speakers. There is very little additional circuitry and that's the key to its great sound, and also it's limited power.
As others here have rightly pointed out, this ships with a 24 volt switching style power supply. The amp itself has what looks like 20-25 watts worth of capacitance. This isn't a 160 wpc amplifier. Fosi doesn't support that specification and it's probably derived from some kind of BS "instantanous" (i.e. transient) power delivery stat based on something theoretical. The real usable power - in my experience in room - is about 20-25 wpc with a 1% thd ceiling (guestimated using listening). I'm a 55 year old long time audiophile and I know what distoration sounds like. The Fosi TDA7498E is a tiny amp. Its binding posts can only handle slender flexible speaker cable. It has limitations driving speakers with sensitivies lower than 87-88 db/watt to satisfying volume levels and I'll describe exactly how I found that out - but the TLDR is that used with a high quality source and with efficient speakers I'm able to get really satisfying audiophile sound of them which makes them a stone cold audiophile bargain.
I'm using the Fosi TDA7498E in a near field application with Athena AS-B1.2 speakers (which have a 90db/watt sensitivity). My source is generally a Windows10 pc running Qobuz and local FLAC rips feeding an ancient PS Audio Ultralink or Muse Model 2 DAC via a Musical Fidelity V-Link. I've used it with a Topping D70 (which is slightly less musical, but can play high-res). I initially used Straghtwire Maestro speaker cable, but was so inflexible that it damaged the binding posts on my first TDA7498E. Since then I've used used thin flexible wire (Audioquest type 2.1).
When my new, unbroken second Fosi TDA7498E arrived, I had just received a pair of KEF LS-50s and was trying to drive them with an old AudioResearch tube amplifier and was having trouble getting good sound. I was awaiting delivery of used 50 wpc audiophile amp (the overlooked and thus low-priced April Audio Stello S100) - but it was delayed in delivery. I plugged the Fosi TDA7498E into the LS-50s in the living room and they meaningfully improved the sound on the ailing tube amp. But their grip on the LS-50s wasn't musically satisfying ultimately. The LS-50s are inefficient (85 db/watt) and low impedance (dips to 3.8 ohm) speakers and they ran the little Fosi TDA7498E into distortion before satisfying living-room listening levels were achieved. This doesn't jibe at all with the Fosi's claimed 160wpc 2-8ohm specs. More confirmation came a week later when the April Audio Stello S100 came and, despite it's modest 50wpc power rating, blew the doors off the little Fosi TDA7498E with the LS50s. It's a $1200 amp ($400 used), so it's not surprising that it handily beat a $75 integrated amp. But the reason it beat the Fosi was power. The TDA7498E ran out of gas and began distorting well before the Stello with the LS50. If you attempt to treat the Fosi TDA7498E like an ordinary amp with the specs it claims you will be disappointed.
I also used the TDA7498E with Creek Audio Epos and ProAc Response 2.2s speakers and it lacks adequate power to drive any of them to really satisfying levels either. But, I cannot emphasize this enough - used with the 90db/watt high efficiency speakers it DOES have enough power to fill the room and do it with brilliant clarity, great bass, and excellent musicality. They are dead quiet in operation. With the source muted you can turn the volume all the way up and no audible hiss is detected at the sensitive speakers within 6 inches. You can hear that as a dead black background. The dominant sonic attribute I treasure with the Fosi TDA7498E is speed. Really good startle or "jump" factor. Not only is this amazing at the price - it's also performance that's clearly superior to earlier, lower powered, d-class tripath-style chip amps. This level of performance is incredible, IMHO and makes it a natural for shoe-string audiophiles.
To sum up:
1) Buy the Fosi TDA7498E if you have a small room or a nearfield application and speaker with efficiency of 88db/watt or more. I'm guessing that 88db/watt is ok. I was only ever satisfied with 90db/watt speakers (the super cheap Athena SB-1.2 which were $150/pair back in the early 2000s).
2) Make sure you use slender and flexible speaker cable.
They are so good for the price I am thinking of buying a second one and using them with RCA cable y-adapater splitters to try running them as bridged monoblocks (not a supported configuration and could well blow them up). If that doubles the effective 20wpc to 40wpc it might be enough to drive the LS50s, barely. In the meantime, it's the heart of my computer workstation nearfield listening which is, truth be told, my primary listening venue. This tiny integrated amp is excellent in that context.
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Fosi Audio TDA7498E 2 Channel 160W x2 Stereo Audio Amplifier Mini Hi-Fi Class D Car Integrated Amp for Passive Speakers with 24V Power Supply
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Fosi Audio TDA7498E 2 Channel Stereo Audio Amplifier Receiver 160W x 2 and P1 Tube Pre-Amplifier$115.98 $119.98This bundle contains 2 items -
Fosi Audio TDA7498E 2 Channel Stereo Audio Amplifier Receiver 160W x 2 and Box X2 Phono Preamp$132.98 $139.98This bundle contains 2 items -
Fosi Audio TDA7498E 2 Channel Stereo Audio Amplifier Receiver 160W x 2 and Banana Plugs 2 Pairs / 4 pcs$69.98 $79.98This bundle contains 2 items -
Fosi Audio TDA7498E 2 Channel Stereo Audio Amplifier Receiver 160W x 2 and Box X1 Phono Preamp for MM Turntable$92.98 $119.98This bundle contains 2 items -
Fosi Audio TDA7498E 2 Channel 160W x2 Stereo Audio Amplifier and Fosi Audio Box X4 Phono Preamp Headphone Amplifier/Preamplifier$132.98 $159.98This bundle contains 2 items
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Product Description
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| TB10A | V1.0B | V1.0G | TDA7498E | TB10D | V3 | |
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| Price | $79.99 | $49.99 | $49.99 | $69.99 | $79.99 | $89.99 |
| Type | 2.0 CH Amp | 2.0 CH Amp | 2.0 CH Amp | 2.0 CH Amp | 2.0 CH Amp | 2.0 CH Amp |
| MAX Power Output | 100W x 2 | 50W x 2 | 50W x 2 | 160W x 2 | 300W x 2 | 300W x 2 |
| Input | RCA | RCA | RCA | RCA | RCA | RCA |
| Output | Passive Speakers | Passive Speakers | Passive Speakers | Passive Speakers | Passive Speakers | Passive Speakers+Pre-Out |
| Treble & Bass Control | ✓ | x | x | x | ✓ | x |
| THD | ≤ 0.04% | ≤ 0.04% | ≤ 0.04% | ≤ 0.04% | ≤ 0.3% | <0.003% |
| SNR | ≥ 98dB | ≥ 98dB | ≥ 98dB | ≥ 98dB | ≥ 90dB | ≥110dB |
| Terminating Impedance | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
| Power Adapter | 24V/4.5A | 19V/4.74A | 19V/4.74A | 24V/4.5A | 32V/5A | 32V/5A |
| Work Voltage | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |
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| BOX X1 | BOX X2 | Q4 | BT10A | T3 | 5654W Tube | |
| Customer Reviews |
1,153
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2,703
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3,418
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| Price | $39.99 | $69.99 | $66.99 | $49.99 | $119.99 | $19.99 |
| Type | Phono Preamp | Phono Preamp with Vacumm Tubes | DAC+Headphone Amp | Bluetooth 2.0 CH Amp | Bluetooth Tube 2.1 CH Amp | Vacuum Tubes |
| MAX Power Output | Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. | Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. | Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. | 50W x 2 | 50W x 2 | - |
| Input | RCA | RCA+3.5mm AUX | PC-USB + Optical + Coaxial | Bluetooth + 3.5mm AUX | Bluetooth + 3.5mm AUX1+3.5mm AUX2 | - |
| Output | Active Speakers + Headphone | Active Speakers | RCA + 3.5mm Headphone | Passive Speakers | Passive Speakers + Active Subwoofer+ Headphone | - |
| Treble & Bass Control | x | x | ✓ | ✓ | ✓ | - |
| THD | ≤ 0.08% | ≤ 0.1% | ≤ 0.1% | ≤ 0.04% | ≤ 0.1% | - |
| SNR | ≥ 70dB | ≥ 98dB | ≥105dB | ≥ 98dB | ≥ 80dB | - |
| Terminating Impedance | - | - | 16-200 Ohm | 2-8 Ohm | 4-8 Ohm | - |
| Power Adapter | 12V/1.5A | 12V/1.5A | - | 19V/4.74A | - | - |
| Work Voltage | AC 110V - 240V | AC 110V - 240V | DC 5V | AC 110V - 240V | AC 110V - 240V | - |
From the brand
Amplifying Your Voice, Shaping Our Innovation
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Discover Fosi Audio - Your HiFi Solution! We're a tech-driven brand, crafting innovative audio products around the world. Our vision: Affordable excellence for each consumer. Our mission: Redefining HiFi with cost-effective innovations. Join Fosi Audio on this unique audio journey!
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Fosi Audio V3
TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2
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Compare with similar items
This Item  Fosi Audio TDA7498E 2 Channel 160W x2 Stereo Audio Amplifier Mini Hi-Fi Class D Car Integrated Amp for Passive Speakers with 24V Power Supply |  |  |  |  |  | |
| Price | -13% $69.99 List: $79.99 | $79.99 | $79.99 | $79.99 | $89.99 | $91.99 |
| Delivery | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 |
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| Sold By | Fosi Audio | Hifi Made Fun | Yima Top | Fosi Audio | Fosi Audio | Yima Top |
| number of channels | 2 | 2 | 2 | 2 | 2 | 2 |
| voltage | 220 volts | 110 volts | 230 volts | 230 volts | 230 volts | 230 volts of alternating current |
| mounting type | Surface Mount | — | Speaker | — | Tabletop | Passive Speaker |
Reviews with images
Sound clarity is very good, replacing my Sonos players
I was an early adapter of Sonos players going back to late 2005/early 2006, acquiring over a dozen of their devices.In 2018 began migrating to the Alexa/Echo ecosystem but held onto two Sonos players driving BA Voyager outdoor speaker pairs. Was looking for an alternative solutions and purchased two Links and began looking for an amp to pair to the outdoor speakers.Perusing Amazon and discovered these tiny sized amps, read a couple of the more technical reviews and order two amps. On the very first song played, I knew I made a good decision. The sound clarity coming from my outdoor speakers never sounded crisper, and the amount of undistorted volume I had available was excellent. These small size Class D amps are the exact recipe to match with the Boston speakers. I could not be more thrilled!The packaging for the amp is plain, but enough hard foam to protect the amp in shipment. On/Off switch, and a solid feel volume control is all you need. The small amp size, combined with my chubby fingers, attaching heavy speaker wire took a little extra time. I ended up buying angled banana plugs to simplify the task and have clean connections to the terminals. The terminal screw caps are strong enough for the size of speaker wire for most applications. I intend to leave these amps on full time as the idle power consumption is negligible.I have the amp volume set at 60-70%, speaker run is about 60 ft and using the Link to control speaker volume through Alexa. At these settings, I get plenty of speaker volume, no distortion and have volume to spare.Living in the DFW area, our weather is good year round for outside activity. I expect there will be days that the two amps will be producing power for 8-10 hours day on day. With an 18 month warranty, I'm assuming a fairly long life span from the little power blocks.I’ll update the review in late spring as the units have more hours on them.RB
Top reviews from the United States
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Reviewed in the United States on June 8, 2020
Reviewed in the United States on September 15, 2019
UpDate 1/4/2021: Had a minor glitch with the board, started clipping and lost power. I was incredibly surprised to find out that this comes with an incredible 18-month warranty. The customer service was unheard of/out of this world. They asked me for my order number and a picture of the unit to verify the purchase, walked me through some diagnostic steps and without further question sent a new unit. Works great. Again, no background buzz, powerful beyond expectation. I have a hard time believing the service. Absolutely incredible!!! I have some of their other units in my sights and have no reservations about purchasing from Fosi.
Compact, powerful, no buzz, more than I expected, incredible warranty, unmatched customer service!
Reviewed in the United States on September 15, 2019
I had been keeping an eye on this product for several months. I waited too long and the price shot up ~ $15. I almost didn't buy it. But I did and although the $15 savings would have been nice, the product is a solid, powerful, amp with little to no hum. Purchased to run the rear channel of my Pioneer Jones Elite Dolby Atmos set up in my home theater. Had been using a "retired" Sony AV receiver but it has a loud hum when off but still plugged in and it has poor separation of channels along with a giant footprint in the built-in shelving and didn't quite keep pace with my Pioneer Elite Atmos receiver powering the remaining speakers. The Fosi holds its own and produces incredible sound, sustained power and has a tiny footprint.Reviewed in the United States on September 15, 2019
UpDate 1/4/2021: Had a minor glitch with the board, started clipping and lost power. I was incredibly surprised to find out that this comes with an incredible 18-month warranty. The customer service was unheard of/out of this world. They asked me for my order number and a picture of the unit to verify the purchase, walked me through some diagnostic steps and without further question sent a new unit. Works great. Again, no background buzz, powerful beyond expectation. I have a hard time believing the service. Absolutely incredible!!! I have some of their other units in my sights and have no reservations about purchasing from Fosi.
Images in this review
Reviewed in the United States on January 1, 2019
Top reviews from other countries
Lalo, H
Excelente Producto Calidad y Precio lo recomiendo 100%
Reviewed in Mexico on June 25, 2021
