Universal Audio OX Amp Top Box Attenuator

Name: Universal Audio OX Amp Top Box Attenuator
Brand: Universal Audio
Price: 771 USD
Availability: InStock

amp

Typical used€680Solid · 71 used sales

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Why this number?

The typical used price is the median of 71 used sales observed in the last 90 days, with outliers removed and the figure rounded. An observed sale is often the last asking price rather than a confirmed hammer price.

Typical used price	€680	median sold, rounded

Most sold between	€640–€720	25th to 75th percentile, same window
Window	last 90 days	the tightest of 90 days, 6 months and 24 months with 8 used sales
Sample	71 used sales	solid sample
By condition	same as typical	excellent, median of 58 sales, same window
	€670	very good, median of 11 sales, same window
90-day change	−1%	vs the 90 days before
Time to sell	19 days	median of 35 listings watched from listing to sale
Live asks	€1,151	typical ask across 104 listings, 69% above typical used
Outliers	dropped	beyond 10× the product’s own median: bundles, parts, typos
All-time	€840	2,795 used sales, 2018–2026; not used for deals
Sales on record	2,870	all-time, all platforms

Typical prices are rounded (to 5 / 10 / 50 / 100 by size, in whichever currency you read); asks and the chart are exact. As of 18 October 2026. Full method, including what each badge means

About the Universal Audio OX Amp Top Box Attenuator

The OX is a reactive load box and attenuator for tube amps with speaker cabinet, microphone and room emulation built in, so you can drive an amp hard and play or record it at any volume. A few things to know before buying one. It handles amps up to 150 W RMS. It needs a 2.4 GHz Wi-Fi network (5 GHz will not work) and an internet connection once, to register it. Firmware 1.2 added five cabinet models, two of them 4x12s with Vintage 30 speakers, and 27 artist RIGs; the list has 22 cabinets with six close mics and six room mics. The box holds the external power supply, a mains cable and a quick start guide; speaker cables and a footswitch are not included, though any one, two or three-button footswitch can switch the effects.

The load is selectable at 4, 8 or 16 ohms, and with a real cabinet on its speaker output it attenuates in five steps from silent to full band volume. Front-panel knobs set the RIG, room level, speaker volume, line out and headphone level. The six-position RIG knob recalls six stored setups of cabinet, mics and effects (EQ, compression, delay and reverberation); everything else is edited in the OX app from an iPad, Mac or Windows computer. Outputs are a speaker jack, two balanced 1/4 inch TRS line outs, S/PDIF on coaxial and optical, and a headphone jack.

For sale right now

The best-priced as cards, a row of them; every other ad as a line, by ask. Each ask is the seller’s own number; the platform’s mark opens the listing. Each one says when we last confirmed it at its source: the price and availability are from that visit, so check the marketplace before you go.

About typical

€685

United States

Last confirmed 14 h ago

Reverb

About typical

€689

Very good typical €670

United States

Last confirmed 38 h ago

Reverb

About typical

€692

United States

Last confirmed 14 h ago

Reverb

About typical

€713

United States

Last confirmed 5 days ago

Reverb

Over typical

€719

Very good typical €670

United States

Last confirmed 14 h ago

Reverb

Over typical

€732

Very good typical €670

United States

Last confirmed 14 h ago

Reverb

54 more live · €746–€1,298 · typical ask €1,151 · 35 United States · 6 United Kingdom

44 more · €787–€1,298 · United States, United Kingdom, Germany, Italy and 8 more

Price history

What it sold for, quarter by quarter, since Apr 2018: 2,794 sales in quarters with at least three, and the bars along the floor show how many each quarter. The shaded band is where the middle half of sales landed.

Recent sales by listing date

71 used sales · last 90 days · middle half €640–€720 · solid

Listed	Price	Condition	From	Platform	The listing
13 Oct 2026	€851$958 as sold	very good	Canada	Reverb	Details
11 Oct 2026	€684$765 as sold	excellent	United States	Reverb	Details
10 Oct 2026	€711$800 as sold	excellent	United States	Reverb	Details
3 Oct 2026	€626$700 as sold	very good	United States	Reverb	Details
12 Sept 2026	€582$650 as sold	good	United States	Reverb	Details

A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and October 2026. A price is what the listing last asked, converted at that day’s rate.

Show the last 50 of 2,870 recorded sales

Listed	Price	Condition	From	Platform	The listing
10 Oct 2026	€691$775 as sold	excellent	United States	Reverb	Details
6 Oct 2026	€669$750 as sold	excellent	United States	Reverb	Details
6 Oct 2026	€804$898 as sold	excellent	United Kingdom	Reverb	Details
3 Oct 2026	€625$700 as sold	excellent	United States	Reverb	Details
3 Oct 2026	€647$725 as sold	excellent	United States	Reverb	Details
2 Oct 2026	€629$705 as sold	excellent	United States	Reverb	Details
1 Oct 2026	€671$750 as sold	excellent	United States	Reverb	Details
28 Sept 2026	€650$730 as sold	very good	United States	Reverb	Details
25 Sept 2026	€680$765 as sold	excellent	United States	Reverb	Details
22 Sept 2026	€733$832 as sold	excellent	Switzerland	Reverb	Details
22 Sept 2026	€721$820 as sold	excellent	United States	Reverb	Details
22 Sept 2026	€614$700 as sold	excellent	United States	Reverb	Details
21 Sept 2026	€615$700 as sold	excellent	United States	Reverb	Details
20 Sept 2026	€759$850 as sold	excellent	United States	Reverb	Details
20 Sept 2026	€684$765 as sold	excellent	United States	Reverb	Details
18 Sept 2026	€671$750 as sold	excellent	United States	Reverb	Details
17 Sept 2026	€581$650 as sold	excellent	United States	Reverb	Details
15 Sept 2026	€668$750 as sold	excellent	United States	Reverb	Details
15 Sept 2026	€668$750 as sold	very good	United States	Reverb	Details
14 Sept 2026	€670$750 as sold	excellent	United States	Reverb	Details
13 Sept 2026	€671$750 as sold	very good	United States	Reverb	Details
11 Sept 2026	€702$800 as sold	excellent	United States	Reverb	Details
7 Sept 2026	€690$800 as sold	very good	United States	Reverb	Details
6 Sept 2026	€716$800 as sold	excellent	United States	Reverb	Details
6 Sept 2026	€663$747 as sold	excellent	United States	Reverb	Details
6 Sept 2026	€856$976 as sold	very good	United Kingdom	Reverb	Details
4 Sept 2026	€702$785 as sold	excellent	United States	Reverb	Details
4 Sept 2026	€712$826 as sold	excellent	Italy	Reverb	Details
1 Sept 2026	€702$785 as sold	excellent	United States	Reverb	Details
1 Sept 2026	€702$800 as sold	excellent	United States	Reverb	Details
30 Aug 2026	€659$737 as sold	excellent	United States	Reverb	Details
29 Aug 2026	€716$800 as sold	excellent	United States	Reverb	Details
27 Aug 2026	€715$800 as sold	excellent	United States	Reverb	Details
26 Aug 2026	€695	good	Germany	eBay Germany	Details
25 Aug 2026	€867$969 as sold	excellent	Spain	Reverb	Details
23 Aug 2026	€840$939 as sold	excellent	Spain	Reverb	Details
23 Aug 2026	€1,050$1,173 as sold	excellent	Canada	Reverb	Details
21 Aug 2026	€687$800 as sold	excellent	United States	Reverb	Details
20 Aug 2026	€804$899 as sold	excellent	United States	Reverb	Details
16 Aug 2026	€666$775 as sold	excellent	United States	Reverb	Details
15 Aug 2026	€687$800 as sold	very good	United States	Reverb	Details
13 Aug 2026	€918$1,069 as sold	very good	Ireland	Reverb	Details
12 Aug 2026	€601$700 as sold	excellent	United States	Reverb	Details
10 Aug 2026	€730$850 as sold	excellent	United States	Reverb	Details
9 Aug 2026	€623$725 as sold	excellent	United States	Reverb	Details

Cheapest live: United States €685 · Germany €793 · United Kingdom €866 · Belgium €889 · before shipping

In one paragraph

The page's figures as one paragraph, assembled for quoting; not written by hand.

Listings of the Universal Audio OX Amp Top Box Attenuator we watched from listing to sale typically went in 19 days (35 watched), a steady; it sells for a median of €680 over the last 90 days across 71 recorded sales, with most examples landing between €640 and €720. There are 104 listings live right now across Reverb, from €685 asking, a median ask 69% over the sale median. Figures computed 18 October 2026 by Doirado from cross-platform listing data.

Related in OX

Universal Audio OX · €780