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  • Onkyo TX-8255 Stereo Receiver (Discontinued by Manufacturer)
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Onkyo TX-8255 Stereo Receiver (Discontinued by Manufacturer)

by Onkyo
405 customer reviews
| 94 answered questions

Available from these sellers.
  • 50W/ch x 2ch
  • Speaker A/B
  • 6 Audio inputs, including Phono input
  • Discrete circuit for High-current drive
  • iPod compatible
5 used from $159.97
This item’s packaging will be visible when delivered and cannot be gift-wrapped.

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Product Specifications

Brand NameOnkyo
Color NameBlack
RMS Power Range - Amplifiers50 watts
Output Channels2

Technical Details

  • Phono input
  • Discrete circuit
  • A/B speaker selector
  • Wide range amplifier technology

Product Description

Product Description

If you want your receiver to focus purely on two-channel audio, the TX-8255 could be just the answer. It's perfect for your living room, or anywhere else you like to sit back and soak up your music. The TX-8255's rock-solid construction incorporates a heavy-duty extruded aluminum heat sink to ensure cooler operation. The whole unit is housed in a rigid, reinforced chassis, finished off with a hairline-brushed aluminum front panel, to help eliminate vibrations. Honoring the Fundamentals of Pure Stereo SoundIf you want your receiver to focus purely on two-channel audio, the TX-8255 could be just the answer. It's perfect for your living room, or anywhere else you like to sit back and soak up your music.The TX-8255's rock-solid construction incorporates a heavy-duty extruded aluminum heat sink to ensure cooler operation.The whole unit is housed in a rigid, reinforced chassis-finished off with a hairline-brushed aluminum front panel-to help eliminate vibrations. Add compatibility with RI dock for the iPod®, and you have a superb stereo solution that brings out the power and dynamism of your audio sources.Special Features50 w/ch, 8 ohm, 20Hz - 20kHz, 0.08% THD, FTCWide Range Amplifier Technology (WRAT)5 Audio Inputs, 2 OutputsPhono InputProduct FeaturesPower Output (Stereo at 8 ohm, 20 Hz-20 kHz, FTC)   50 W/Ch Dynamic Power** (4 ohm)   105 W/Ch Discrete Output Stage    6 ohm Capable    4 ohm Capable    Multiroom Connection  &n

From the Manufacturer

From the Manufacturer

Onkyo's TX-8255 A/V Stereo Receiver: Getting Back to the Basics for the Sake of Audio Quality

While new technologies come and go, the fundamentals of competent receiver design remain constant. It is best to think of it in simple terms: a power supply, an input stage, a driver stage, and an output stage that all combine to amplify signals without any loss in quality. The current that actually drives the loudspeakers comes from a power source via the receiver's power supply. You can never underestimate the importance of the power supply, and all other audio processing functions cannot rule over good solid amplification. This is the direction Onkyo has taken with the TX-8255. Built for those people who value the benefits of time-proven amplification design, the TX-8255 takes core Onkyo technology--and an array of features you'll actually use--to bring you a no-nonsense stereo receiver that will deliver audio and radio signals with agreeable quality.

Superb Design


The TX-8255 includes Onkyo's exclusive Wide Range Amplifier Technology
With its continued excellence in sound reproduction, Onkyo has once again created a versatile stereo receiver for the music lover in you. The TX-8255 stereo receiver offers superb functionality and dual-room capability that will be hard to match. Onkyo exclusives like Wide Range Amplifier Technology (WRAT), discrete output stage circuitry, massive power transformer, and heavy-duty extruded heat sink offer the cleanest signal on the market. Most of the receiver's audio processing is handled automatically, with little intervention on your part. However, it is so advanced; its discrete output reproduces music with unmatched sonic clarity and dynamic power.

This receiver features a high-end design approach encompassing everything from its massive power transformer design and high-current, low-impedance drive to discrete output circuitry and minimal use of negative feedback. This enables the receiver to combine tighter bass, superb transient response and enhanced presence at any volume level. Remote Interactive (RI) capability enables you to simply connect your iPod to your receiver through Onkyo's RI Dock option for the iPod (DS-A2). Your iPod effectively becomes another Onkyo component flowing through the TX-8255.

In a Nutshell

The TX-8255 is a 2 x 50W (@ 8 ohms) stereo receiver capable of delivering breathtaking stereo sound. It features 5-sets of audio inputs, 2-sets of audio outputs, individual treble, bass, and balance controls, Remote Interactive (RI) port, A/B speaker switching, banana plug speaker posts, and an AM/FM tuner. Because of the high efficiency of its design, this powerful receiver produces exceptional sound quality, and clarity in every audible detail. With speaker A/B selectors and dedicated speaker terminals, this receiver offers the capability to send audio to a second room. In addition, the built-in IR port enables multi-room distribution with optional control systems.


What’s in the box:
Onkyo TX-8255 2-Channel Stereo Receiver (Black), Remote Control, AM Loop Antenna, FM Wire Antenna and 2-Years Parts and Labor Warranty.



Technical Specifications

  • Stereo RMS Power: 50W per channel x 2, into 8 ohms
  • Dynamic Range: 135W per channel x 2, into 2 ohms, 105W per channel x 2, into 4 ohms, 70W per channel x 2, into 8 ohms
  • No. of Channels: 2
  • Speaker Selector: Yes
  • AM/FM Tuner: Yes, with 40 presets
  • Input Analog Audio: - x5 Sets (RCA)
  • Input Phono: - x1 Set (RCA)
  • Input FM Antenna: - x1
  • Input AM Antenna: - x1
  • Output Analog Audio: - x2 Sets (RCA)
  • Output Headphone: - x1 (1/4" Phone)
  • Output Speakers: - x4 Sets (Binding Post)
  • IR Input/Output Port x1 (Mini)
  • RI Port x1 (Mini)



Product Details

  • Product Dimensions: 13.4 x 17.1 x 5.9 inches ; 20.5 pounds
  • Shipping Weight: 20.6 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B001AMSPQI
  • Item model number: TX-8255B
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (405 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: August 16, 2008

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

238 of 247 people found the following review helpful By Mike Ventura on September 13, 2008
Verified Purchase
This receiver replaced a Sony STR 397 that had a continuous static problem that was never fixed. I gave up on the Sony and bought the Onkyo. I use it to power two Polk tower speakers hooked up to my HDTV and DVD player.

The receiver is basic, no frills. Bass, treble and balance controls are on the front panel. There is no loudness control. There are multiple memory settings for music stations. All the standard connections are in the back including an input for an iPod (docking station extra). The tuner works well and has standard scanning for stations.

The receiver is rated at 50W per channel. It is plenty adequate for the Polks. The sound is clear and unvarnished. It produces a crisper, cleaner sound than the Sony.

For sound reproduction without lots of frills and buttons, this has proved an excellent choice. I am very pleased with the item.

Once again, I have to complement Amazon for having excellent pricing and incredible free shipping that is fast.
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174 of 181 people found the following review helpful By Arthur Hampton on October 31, 2008
Verified Purchase
I bought this receiver to replace a fine amp, preamp combo that was 25 years old and had served me well (a NAD). So this one has a tuner built in - oh well. I'll almost never play the radio. But this unit is just amazing. It impresses me as being totally transparent. There is no noise, no hum, no nothing to let me know that I'm listening to a cd, unless the signal is on the cd or other audio source. Either stuff has gotten a lot better in the last 25 years, or my hearing has deteriorated. Heh heh - both are true. I've only had it two days, so I know nothing of durability. It's driving a couple of IMF speakers which are quite power hungry - no sweat, they just sing beautifully.

Update: Well, it's been over four years and this beast has been terrific. The only way I know it's on is because there is that led display. It gets left on overnight because I forget it's there. Just what I was looking for in an amp.
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101 of 108 people found the following review helpful By lovesummer on December 31, 2009
Verified Purchase
I was glad to see that there are still some two-channel stereo receivers that aren't home theater setups. Having 40 radio presets is also nice, and a large volume KNOB, not volume buttons, is fantastic. I just wish the controls had bigger buttons and much bigger labels with more contrast. I had to get a flashlight out to read all the controls. The buttons are black on a black faceplate and the printed labels, though white, are washed out and in about 8 point type. I wish designers would pay more attention to the ergonomics of electronics.
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67 of 71 people found the following review helpful By Kevin H. Cadarette on January 4, 2009
I got this for my parents for xmas, to replace their old Sansui that finally gave up the ghost. I hooked it up New Years day, and was amazed with the sound/power this unit puts out. I have a DE898 Sony stereo that cost about 2x last year, and with the same speakers does not sound anywhere near as clear or crisp. I tried both Polk monitor, and Bose InterAudio series and the results were the same; this receiver puts out plenty of power, and sounds very crisp. The highs are not tinny, and the base is not boomy, just very clear. Wow. Mom and Dad are very happy to listen to their reel to reel, cassette, cd, record player, and tv through the speakers, and hear detail they have not heard in years. I am wondering why I bought surround sound for me now, I forgot how good just plain stereo can sound. The remote is very easy to see, and understand. Nothing fancy, just basic.

There is some math issue here.
Onkyo says 50 watts per channel rms
Sony says 100 watts per channel rms
The Sony sounds like it is lower power, and has to be run at half volume to get much sound. Both units with the same speakers. I suspect Marketing departments are involved here, with marketing math.
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36 of 39 people found the following review helpful By Terry Schoenberger on March 24, 2009
Verified Purchase
The Onkyo TX-8255 is a great amp for the price. It feels solid, has good basic features including "phono" input for those of us that still own a turntable and it sounds good. Its easy to operate and has a nice remote too. They sell an IPOD dock for this unit but the reviews arent very good. You can hook any IPOD up to any receiver using a basic cable that plugs into your IPOD and then into any stereo input on the receiver, except phono. (Stereo cable: RCA male to 1/8 male pin plug)
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40 of 44 people found the following review helpful By Michael J. Mitchell on March 1, 2009
Per the title, and considering the price, I gave it 5 stars. However, I would not have purchased it had I been more careful to note that it has no loudness button. That came as a surprise and is missed compared to the receiver it is replacing - an old Harmon Kardon 930, (which cost over four times this unit back in 1973!). Although increasing the bass and treble at low volume levels helps somewhat, bass and treble cannot compensate the same way as EQ for the Fletcher Munson curve, (now ISO 226). What I cannot understand is why Onkyo left it out considering that loudness EQ can be fairly approximated with only, (per channel), two passive components, (a resistor and a capacitor), along with an extra tap point on the volume control potentiometer and a DPST push button switch on the front. We're talking less than $2.00 in cost so maybe $10.00 retail? C'mon Onkyo...
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24 of 25 people found the following review helpful By a customer on November 21, 2010
Verified Purchase
This is my first "better" quality receiver,and it's hard to belive it was about the same price as Sony's basic model stereo receiver. (I like Sony products, but Onkyo receivers have a better rep.) This thing pulls in radio stations I never knew existed, and is deathly quiet between sounds-no hiss or static at all. It's functions are basic, but that's what I was looking for. I was surprised at the size...it's only slightly smaller than my previous receiver, which is a 5.1. It's the largest 2 channel receiver I've seen, but maybe I'm just too used to cheaper amps. It doesn't even get hot,although as a renter I'm not cranking it, and I am using a sub so it's not being driven hard. Don't worry about the 50 watt rating-it sounds better than most 100 watt amps I've heard. My only negative is that the screw type speaker connects are so close together it can be tough hooking the wires up. You have to pass the wires through and screw them tight while making sure not even a thread from one wire can touch anywhere else. I like hooking up audio equipment, and this still was a pain for me. It's box came packed in a larger box and arrived unharmed. For those looking for a quality stereo system, I think you'll love this amp. I bought this mainly for music, but have my TV hooked up as well, which means I use it for DVD and Blu Ray watching also. Love it.

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UPDATE: 6/3/2013

Just a quick update as to how my Onkyo receiver is holding up. My original system was using budget Sony speakers (SS-B1000), and a cheap Sony sub (SA-W2500). A good cheap starter set.
Read more ›
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