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Side-by-side financial comparison of KOSS CORP (KOSS) and SONO TEK CORP (SOTK). Click either name above to swap in a different company.
SONO TEK CORP is the larger business by last-quarter revenue ($5.0M vs $2.9M, roughly 1.7× KOSS CORP). SONO TEK CORP runs the higher net margin — 6.8% vs -19.8%, a 26.6% gap on every dollar of revenue. On growth, SONO TEK CORP posted the faster year-over-year revenue change (-3.6% vs -19.6%). SONO TEK CORP produced more free cash flow last quarter ($1.1M vs $-1.1M). Over the past eight quarters, KOSS CORP's revenue compounded faster (4.2% CAGR vs 2.5%).
Koss Corporation is a company in Milwaukee, Wisconsin, US that manufactures headphones. The company created the first high-fidelity stereo headphones in 1958.
Sono Tek Corp is a U.S.-headquartered technology firm that designs, produces and sells precision ultrasonic spray coating systems, nozzles and related accessories. Its solutions serve electronics manufacturing, medical device production, energy storage and industrial processing sectors, catering to global commercial clients and research institutions.
KOSS vs SOTK — Head-to-Head
Income Statement — Q2 FY2026 vs Q3 FY2026
| Metric | | |
|---|---|---|
| Revenue | $2.9M | $5.0M |
| Net Profit | $-565.4K | $340.0K |
| Gross Margin | 29.0% | 50.2% |
| Operating Margin | -35.5% | 6.4% |
| Net Margin | -19.8% | 6.8% |
| Revenue YoY | -19.6% | -3.6% |
| Net Profit YoY | -700.6% | 24.0% |
| EPS (diluted) | $-0.06 | $0.02 |
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.
| Q4 25 | $2.9M | $5.0M | ||
| Q3 25 | $4.1M | $5.2M | ||
| Q2 25 | $3.1M | $5.1M | ||
| Q1 25 | $2.8M | $5.1M | ||
| Q4 24 | $3.6M | $5.2M | ||
| Q3 24 | $3.2M | $5.2M | ||
| Q2 24 | $2.9M | $5.0M | ||
| Q1 24 | $2.6M | $4.8M |
| Q4 25 | $-565.4K | $340.0K | ||
| Q3 25 | $243.7K | $423.7K | ||
| Q2 25 | $-232.7K | $485.0K | ||
| Q1 25 | $-316.7K | $327.7K | ||
| Q4 24 | $94.1K | $274.2K | ||
| Q3 24 | $-419.5K | $340.7K | ||
| Q2 24 | $-110.4K | $330.8K | ||
| Q1 24 | $-313.8K | $156.6K |
| Q4 25 | 29.0% | 50.2% | ||
| Q3 25 | 40.0% | 50.2% | ||
| Q2 25 | 36.0% | 51.9% | ||
| Q1 25 | 39.0% | 47.4% | ||
| Q4 24 | 39.5% | 45.1% | ||
| Q3 24 | 36.6% | 48.7% | ||
| Q2 24 | 40.4% | 48.8% | ||
| Q1 24 | 31.9% | 49.1% |
| Q4 25 | -35.5% | 6.4% | ||
| Q3 25 | -1.1% | 8.2% | ||
| Q2 25 | -14.2% | 9.4% | ||
| Q1 25 | -18.7% | 5.6% | ||
| Q4 24 | -4.0% | 3.8% | ||
| Q3 24 | -19.9% | 5.5% | ||
| Q2 24 | -11.0% | 4.7% | ||
| Q1 24 | -23.1% | -0.3% |
| Q4 25 | -19.8% | 6.8% | ||
| Q3 25 | 6.0% | 8.2% | ||
| Q2 25 | -7.5% | 9.4% | ||
| Q1 25 | -11.4% | 6.4% | ||
| Q4 24 | 2.6% | 5.3% | ||
| Q3 24 | -13.1% | 6.6% | ||
| Q2 24 | -3.8% | 6.6% | ||
| Q1 24 | -11.9% | 3.3% |
| Q4 25 | $-0.06 | $0.02 | ||
| Q3 25 | $0.03 | $0.03 | ||
| Q2 25 | $-0.02 | $0.03 | ||
| Q1 25 | $-0.03 | $0.02 | ||
| Q4 24 | $0.01 | $0.02 | ||
| Q3 24 | $-0.05 | $0.02 | ||
| Q2 24 | $-0.01 | $0.02 | ||
| Q1 24 | $-0.03 | $0.02 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $15.5M | $11.7M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $30.3M | $19.1M |
| Total Assets | $36.8M | $23.9M |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $15.5M | $11.7M | ||
| Q3 25 | $16.5M | $10.6M | ||
| Q2 25 | $15.7M | $10.9M | ||
| Q1 25 | $13.0M | $11.9M | ||
| Q4 24 | $9.7M | $12.7M | ||
| Q3 24 | $11.9M | $11.6M | ||
| Q2 24 | $14.9M | $12.2M | ||
| Q1 24 | $9.9M | $11.8M |
| Q4 25 | $30.3M | $19.1M | ||
| Q3 25 | $30.9M | $18.7M | ||
| Q2 25 | $30.6M | $18.3M | ||
| Q1 25 | $30.7M | $17.8M | ||
| Q4 24 | $31.0M | $17.4M | ||
| Q3 24 | $30.8M | $17.0M | ||
| Q2 24 | $31.1M | $16.7M | ||
| Q1 24 | $31.1M | $16.3M |
| Q4 25 | $36.8M | $23.9M | ||
| Q3 25 | $37.7M | $23.2M | ||
| Q2 25 | $37.2M | $23.4M | ||
| Q1 25 | $37.3M | $23.4M | ||
| Q4 24 | $37.4M | $24.3M | ||
| Q3 24 | $38.1M | $22.9M | ||
| Q2 24 | $37.2M | $23.6M | ||
| Q1 24 | $37.6M | $23.1M |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $-760.8K | $1.2M |
| Free Cash FlowOCF − Capex | $-1.1M | $1.1M |
| FCF MarginFCF / Revenue | -37.5% | 22.8% |
| Capex IntensityCapex / Revenue | 10.9% | 1.4% |
| Cash ConversionOCF / Net Profit | — | 3.56× |
| TTM Free Cash FlowTrailing 4 quarters | $-546.7K | $-811.2K |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-760.8K | $1.2M | ||
| Q3 25 | $762.6K | $-176.8K | ||
| Q2 25 | $-534.9K | $-922.3K | ||
| Q1 25 | $370.4K | $-674.3K | ||
| Q4 24 | $-252.0K | $1.3M | ||
| Q3 24 | $201.6K | $-418.4K | ||
| Q2 24 | $-174.0K | $328.0K | ||
| Q1 24 | $328.6K | $-278.5K |
| Q4 25 | $-1.1M | $1.1M | ||
| Q3 25 | $761.5K | $-237.3K | ||
| Q2 25 | $-541.8K | $-974.5K | ||
| Q1 25 | $306.2K | $-740.0K | ||
| Q4 24 | $-314.3K | $1.1M | ||
| Q3 24 | $-155.6K | $-576.1K | ||
| Q2 24 | $-174.8K | $295.0K | ||
| Q1 24 | $269.3K | $-746.6K |
| Q4 25 | -37.5% | 22.8% | ||
| Q3 25 | 18.7% | -4.6% | ||
| Q2 25 | -17.6% | -19.0% | ||
| Q1 25 | 11.0% | -14.5% | ||
| Q4 24 | -8.8% | 20.8% | ||
| Q3 24 | -4.9% | -11.2% | ||
| Q2 24 | -6.0% | 5.9% | ||
| Q1 24 | 10.2% | -15.7% |
| Q4 25 | 10.9% | 1.4% | ||
| Q3 25 | 0.0% | 1.2% | ||
| Q2 25 | 0.2% | 1.0% | ||
| Q1 25 | 2.3% | 1.3% | ||
| Q4 24 | 1.8% | 4.1% | ||
| Q3 24 | 11.2% | 3.1% | ||
| Q2 24 | 0.0% | 0.7% | ||
| Q1 24 | 2.3% | 9.8% |
| Q4 25 | — | 3.56× | ||
| Q3 25 | 3.13× | -0.42× | ||
| Q2 25 | — | -1.90× | ||
| Q1 25 | — | -2.06× | ||
| Q4 24 | -2.68× | 4.70× | ||
| Q3 24 | — | -1.23× | ||
| Q2 24 | — | 0.99× | ||
| Q1 24 | — | -1.78× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
