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Side-by-side financial comparison of DATA I/O CORP (DAIO) and KOSS CORP (KOSS). Click either name above to swap in a different company.

DATA I/O CORP is the larger business by last-quarter revenue ($4.0M vs $2.9M, roughly 1.4× KOSS CORP). KOSS CORP runs the higher net margin — -19.8% vs -69.0%, a 49.3% gap on every dollar of revenue. On growth, KOSS CORP posted the faster year-over-year revenue change (-19.6% vs -23.2%). KOSS CORP produced more free cash flow last quarter ($-1.1M vs $-1.9M). Over the past eight quarters, KOSS CORP's revenue compounded faster (4.2% CAGR vs -19.2%).

Data I/O Corporation is a provider of manual and automated data programming and security provisioning systems for flash memory, microcontrollers, and logic devices. Founded in 1969 and incorporated in 1972, the company developed equipment that allowed electronic designers to program non-volatile semiconductor devices with data stored on punched cards or ASCII-encoded (eight-level) punched paper tape. These products were used for the design and manufacturing of systems used in industries such ...

Koss Corporation is a company in Milwaukee, Wisconsin, US that manufactures headphones. The company created the first high-fidelity stereo headphones in 1958.

DAIO vs KOSS — Head-to-Head

Bigger by revenue
DAIO
DAIO
1.4× larger
DAIO
$4.0M
$2.9M
KOSS
Growing faster (revenue YoY)
KOSS
KOSS
+3.6% gap
KOSS
-19.6%
-23.2%
DAIO
Higher net margin
KOSS
KOSS
49.3% more per $
KOSS
-19.8%
-69.0%
DAIO
More free cash flow
KOSS
KOSS
$784.5K more FCF
KOSS
$-1.1M
$-1.9M
DAIO
Faster 2-yr revenue CAGR
KOSS
KOSS
Annualised
KOSS
4.2%
-19.2%
DAIO

Income Statement — Q4 FY2025 vs Q2 FY2026

Metric
DAIO
DAIO
KOSS
KOSS
Revenue
$4.0M
$2.9M
Net Profit
$-2.8M
$-565.4K
Gross Margin
43.0%
29.0%
Operating Margin
-62.8%
-35.5%
Net Margin
-69.0%
-19.8%
Revenue YoY
-23.2%
-19.6%
Net Profit YoY
-132.7%
-700.6%
EPS (diluted)
$-0.29
$-0.06

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
DAIO
DAIO
KOSS
KOSS
Q4 25
$4.0M
$2.9M
Q3 25
$5.4M
$4.1M
Q2 25
$5.9M
$3.1M
Q1 25
$6.2M
$2.8M
Q4 24
$5.2M
$3.6M
Q3 24
$5.4M
$3.2M
Q2 24
$5.1M
$2.9M
Q1 24
$6.1M
$2.6M
Net Profit
DAIO
DAIO
KOSS
KOSS
Q4 25
$-2.8M
$-565.4K
Q3 25
$-1.4M
$243.7K
Q2 25
$-742.0K
$-232.7K
Q1 25
$-382.0K
$-316.7K
Q4 24
$-1.2M
$94.1K
Q3 24
$-307.0K
$-419.5K
Q2 24
$-797.0K
$-110.4K
Q1 24
$-807.0K
$-313.8K
Gross Margin
DAIO
DAIO
KOSS
KOSS
Q4 25
43.0%
29.0%
Q3 25
50.7%
40.0%
Q2 25
49.8%
36.0%
Q1 25
51.6%
39.0%
Q4 24
52.2%
39.5%
Q3 24
53.9%
36.6%
Q2 24
54.5%
40.4%
Q1 24
52.8%
31.9%
Operating Margin
DAIO
DAIO
KOSS
KOSS
Q4 25
-62.8%
-35.5%
Q3 25
-25.8%
-1.1%
Q2 25
-14.2%
-14.2%
Q1 25
-6.1%
-18.7%
Q4 24
-24.8%
-4.0%
Q3 24
-6.0%
-19.9%
Q2 24
-11.2%
-11.0%
Q1 24
-14.1%
-23.1%
Net Margin
DAIO
DAIO
KOSS
KOSS
Q4 25
-69.0%
-19.8%
Q3 25
-25.3%
6.0%
Q2 25
-12.5%
-7.5%
Q1 25
-6.2%
-11.4%
Q4 24
-22.8%
2.6%
Q3 24
-5.7%
-13.1%
Q2 24
-15.7%
-3.8%
Q1 24
-13.2%
-11.9%
EPS (diluted)
DAIO
DAIO
KOSS
KOSS
Q4 25
$-0.29
$-0.06
Q3 25
$-0.15
$0.03
Q2 25
$-0.08
$-0.02
Q1 25
$-0.04
$-0.03
Q4 24
$-0.13
$0.01
Q3 24
$-0.03
$-0.05
Q2 24
$-0.09
$-0.01
Q1 24
$-0.09
$-0.03

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
DAIO
DAIO
KOSS
KOSS
Cash + ST InvestmentsLiquidity on hand
$15.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$13.5M
$30.3M
Total Assets
$20.2M
$36.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
DAIO
DAIO
KOSS
KOSS
Q4 25
$15.5M
Q3 25
$16.5M
Q2 25
$15.7M
Q1 25
$13.0M
Q4 24
$9.7M
Q3 24
$11.9M
Q2 24
$14.9M
Q1 24
$9.9M
Stockholders' Equity
DAIO
DAIO
KOSS
KOSS
Q4 25
$13.5M
$30.3M
Q3 25
$16.0M
$30.9M
Q2 25
$17.2M
$30.6M
Q1 25
$17.5M
$30.7M
Q4 24
$17.6M
$31.0M
Q3 24
$19.2M
$30.8M
Q2 24
$18.9M
$31.1M
Q1 24
$19.6M
$31.1M
Total Assets
DAIO
DAIO
KOSS
KOSS
Q4 25
$20.2M
$36.8M
Q3 25
$22.7M
$37.7M
Q2 25
$24.1M
$37.2M
Q1 25
$24.5M
$37.3M
Q4 24
$25.0M
$37.4M
Q3 24
$24.8M
$38.1M
Q2 24
$24.1M
$37.2M
Q1 24
$26.2M
$37.6M

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
DAIO
DAIO
KOSS
KOSS
Operating Cash FlowLast quarter
$-1.7M
$-760.8K
Free Cash FlowOCF − Capex
$-1.9M
$-1.1M
FCF MarginFCF / Revenue
-46.6%
-37.5%
Capex IntensityCapex / Revenue
5.2%
10.9%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-2.8M
$-546.7K

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
DAIO
DAIO
KOSS
KOSS
Q4 25
$-1.7M
$-760.8K
Q3 25
$-343.0K
$762.6K
Q2 25
$-342.0K
$-534.9K
Q1 25
$109.0K
$370.4K
Q4 24
$-1.6M
$-252.0K
Q3 24
$839.0K
$201.6K
Q2 24
$-243.0K
$-174.0K
Q1 24
$-41.0K
$328.6K
Free Cash Flow
DAIO
DAIO
KOSS
KOSS
Q4 25
$-1.9M
$-1.1M
Q3 25
$-348.0K
$761.5K
Q2 25
$-633.0K
$-541.8K
Q1 25
$53.0K
$306.2K
Q4 24
$-1.7M
$-314.3K
Q3 24
$724.0K
$-155.6K
Q2 24
$-268.0K
$-174.8K
Q1 24
$-180.0K
$269.3K
FCF Margin
DAIO
DAIO
KOSS
KOSS
Q4 25
-46.6%
-37.5%
Q3 25
-6.5%
18.7%
Q2 25
-10.6%
-17.6%
Q1 25
0.9%
11.0%
Q4 24
-33.5%
-8.8%
Q3 24
13.4%
-4.9%
Q2 24
-5.3%
-6.0%
Q1 24
-3.0%
10.2%
Capex Intensity
DAIO
DAIO
KOSS
KOSS
Q4 25
5.2%
10.9%
Q3 25
0.1%
0.0%
Q2 25
4.9%
0.2%
Q1 25
0.9%
2.3%
Q4 24
3.6%
1.8%
Q3 24
2.1%
11.2%
Q2 24
0.5%
0.0%
Q1 24
2.3%
2.3%
Cash Conversion
DAIO
DAIO
KOSS
KOSS
Q4 25
Q3 25
3.13×
Q2 25
Q1 25
Q4 24
-2.68×
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

DAIO
DAIO

Other$2.1M53%
Adapter Sales$1.9M47%

KOSS
KOSS

Segment breakdown not available.

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