Comprehensive Stock Comparison
Compare Koss Corporation (KOSS) vs Sonos, Inc. (SONO) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Growth | KOSS | 2.9% revenue growth vs SONO's -4.9% |
| Quality / Margins | SONO | -1.2% net margin vs KOSS's -6.8% |
| Stability / Safety | KOSS | Beta 1.31 vs SONO's 1.52, lower leverage |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | SONO | +16.5% vs KOSS's -25.3% |
| Efficiency (ROA) | SONO | -1.9% ROA vs KOSS's -2.4%, ROIC -12.3% vs -4.2% |
Who Each Stock Is For
Income & stability
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
Koss Corporation is a manufacturer and seller of stereo headphones and audio accessories. It generates revenue primarily from headphone sales—including high-fidelity, wireless, and noise-canceling models—through distributors, retailers, and direct channels, with a smaller portion from private label manufacturing. The company's moat lies in its established brand reputation in the audio equipment space and its long-standing distribution relationships across multiple retail channels.
Sonos is a premium wireless multi-room audio system company that designs and sells smart speakers and home theater products. It generates revenue primarily from hardware sales—including speakers, soundbars, and components—with a growing contribution from its software subscription services that offer music streaming and voice control features. The company's key advantage is its proprietary ecosystem that seamlessly integrates multiple speakers across rooms, creating a sticky platform that locks in customers through interoperability and superior user experience.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Segment breakdown not available.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
KOSS leads in 3 of 6 categories (Valuation Metrics, Profitability & Efficiency). SONO leads in 1 (Financial Metrics). 1 tied.
Financial Metrics (TTM)
SONO is the larger business by revenue, generating $1.4B annually — 112.4x KOSS's $13M. SONO is the more profitable business, keeping -1.2% of every revenue dollar as net income compared to KOSS's -6.8%. On growth, SONO holds the edge at -0.9% YoY revenue growth, suggesting stronger near-term business momentum.
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| RevenueTrailing 12 months | $13M | $1.4B |
| EBITDAEarnings before interest/tax | -$2M | $49M |
| Net IncomeAfter-tax profit | -$871,116 | -$18M |
| Free Cash FlowCash after capex | -$546,651 | $122M |
| Gross MarginGross profit ÷ Revenue | +36.4% | +44.7% |
| Operating MarginEBIT ÷ Revenue | -15.8% | +0.1% |
| Net MarginNet income ÷ Revenue | -6.8% | -1.2% |
| FCF MarginFCF ÷ Revenue | -4.3% | +8.5% |
| Rev. Growth (YoY)Latest quarter vs prior year | -19.6% | -0.9% |
| EPS Growth (YoY)Latest quarter vs prior year | — | +87.5% |
Valuation Metrics
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| Market CapShares × price | $39M | $1.9B |
| Enterprise ValueMkt cap + debt − cash | $39M | $1.8B |
| Trailing P/EPrice ÷ TTM EPS | -44.22x | -30.20x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 48.89x |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | 154.44x |
| Price / SalesMarket cap ÷ Revenue | 3.10x | 1.31x |
| Price / BookPrice ÷ Book value/share | 1.26x | 5.24x |
| Price / FCFMarket cap ÷ FCF | — | 17.49x |
Profitability & Efficiency
KOSS delivers a -2.9% return on equity — every $100 of shareholder capital generates $-3 in annual profit, vs $-4 for SONO. KOSS carries lower financial leverage with a 0.08x debt-to-equity ratio, signaling a more conservative balance sheet compared to SONO's 0.32x.
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| ROE (TTM)Return on equity | -2.9% | -4.0% |
| ROA (TTM)Return on assets | -2.4% | -1.9% |
| ROICReturn on invested capital | -4.2% | -12.3% |
| ROCEReturn on capital employed | -4.9% | -9.9% |
| Piotroski ScoreFundamental quality 0–9 | 5 | 5 |
| Debt / EquityFinancial leverage | 0.08x | 0.32x |
| Net DebtTotal debt minus cash | -$266,063 | -$121M |
| Cash & Equiv.Liquid assets | $3M | $175M |
| Total DebtShort + long-term debt | $3M | $113M |
| Interest CoverageEBIT ÷ Interest expense | -1972.72x | -393.13x |
Total Returns (with DRIP)
A $10,000 investment in SONO five years ago would be worth $3,749 today (with dividends reinvested), compared to $2,179 for KOSS. Over the past 12 months, SONO leads with a +16.5% total return vs KOSS's -25.3%. The 3-year compound annual growth rate (CAGR) favors KOSS at -6.3% vs SONO's -7.5% — a key indicator of consistent wealth creation.
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| YTD ReturnYear-to-date | -4.8% | -11.9% |
| 1-Year ReturnPast 12 months | -25.3% | +16.5% |
| 3-Year ReturnCumulative with dividends | -17.7% | -20.7% |
| 5-Year ReturnCumulative with dividends | -78.2% | -62.5% |
| 10-Year ReturnCumulative with dividends | +92.1% | -22.7% |
| CAGR (3Y)Annualised 3-year return | -6.3% | -7.5% |
Risk & Volatility
KOSS is the less volatile stock with a 1.31 beta — it tends to amplify market swings less than SONO's 1.52 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. SONO currently trades 77.7% from its 52-week high vs KOSS's 48.1% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 1.31x | 1.52x |
| 52-Week HighHighest price in past year | $8.59 | $19.82 |
| 52-Week LowLowest price in past year | $4.00 | $7.63 |
| % of 52W HighCurrent price vs 52-week peak | +48.1% | +77.7% |
| RSI (14)Momentum oscillator 0–100 | 39.7 | 49.6 |
| Avg Volume (50D)Average daily shares traded | 36K | 1.5M |
Analyst Outlook
| Metric | KOSSKoss Corporation | SONOSonos, Inc. |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $19.50 |
| # AnalystsCovering analysts | — | 9 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | 0 | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | +4.3% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Mar 20 | Feb 26 | Change |
|---|---|---|---|
| Koss Corporation (KOSS) | 100 | 382.54 | +282.5% |
| Sonos, Inc. (SONO) | 100 | 129.32 | +29.3% |
Sonos, Inc. (SONO) returned -63% over 5 years vs Koss Corporation (KOSS)'s -78%.
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Koss Corporation (KOSS) | $26M | $13M | -51.4% |
| Sonos, Inc. (SONO) | $901M | $1.4B | +60.1% |
Koss Corporation's revenue grew from $26M (2016) to $13M (2025) — a -7.7% CAGR. Sonos, Inc.'s revenue grew from $901M (2016) to $1.4B (2025) — a 5.4% CAGR.
Chart 3Net Margin Trend — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Koss Corporation (KOSS) | 5.3% | -6.9% | -229.7% |
| Sonos, Inc. (SONO) | -4.2% | -4.2% | +0.1% |
Koss Corporation's net margin went from 5% (2016) to -7% (2025). Sonos, Inc.'s net margin went from -4% (2016) to -4% (2025).
Chart 4P/E Ratio History — 4 Years
| Stock | 2019 | 2023 | Change |
|---|---|---|---|
| Koss Corporation (KOSS) | 26.3 | 3.9 | -85.2% |
Koss Corporation has traded in a 4x–209x P/E range over 4 years; current trailing P/E is ~-44x.
Chart 5EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Koss Corporation (KOSS) | 0.19 | -0.09 | -149.2% |
| Sonos, Inc. (SONO) | -0.36 | -0.51 | -41.7% |
Koss Corporation's EPS grew from $0.19 (2016) to $-0.09 (2025) — a NaN% CAGR. Sonos, Inc.'s EPS grew from $-0.36 (2016) to $-0.51 (2025).
Chart 6Free Cash Flow — 5 Years
Koss Corporation generated $-1M FCF in 2025 (-181% vs 2021). Sonos, Inc. generated $108M FCF in 2025 (-48% vs 2021).
KOSS vs SONO: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is KOSS or SONO a better buy right now?
Analysts rate Sonos, Inc. (SONO) a "Buy" — based on 9 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.
02Which is the better long-term investment — KOSS or SONO?
Over the past 5 years, Sonos, Inc. (SONO) delivered a total return of -62.5%, compared to -78.2% for Koss Corporation (KOSS). A $10,000 investment in SONO five years ago would be worth approximately $4K today (assuming dividends reinvested). Over 10 years, the gap is even starker: KOSS returned +92.1% versus SONO's -22.7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
03Which is safer — KOSS or SONO?
By beta (market sensitivity over 5 years), Koss Corporation (KOSS) is the lower-risk stock at 1.31β versus Sonos, Inc.'s 1.52β — meaning SONO is approximately 16% more volatile than KOSS relative to the S&P 500. On balance sheet safety, Koss Corporation (KOSS) carries a lower debt/equity ratio of 8% versus 32% for Sonos, Inc. — giving it more financial flexibility in a downturn.
04Which has better profit margins — KOSS or SONO?
Sonos, Inc. (SONO) is the more profitable company, earning -4.2% net margin versus -6.9% for Koss Corporation — meaning it keeps -4.2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SONO leads at -3.5% versus -13.8% for KOSS. At the gross margin level — before operating expenses — SONO leads at 43.7%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.
05Which pays a better dividend — KOSS or SONO?
None of the stocks in this comparison currently pay a material dividend. All are effectively zero-yield and should be held for capital appreciation rather than income.
06Is KOSS or SONO better for a retirement portfolio?
For long-horizon retirement investors, Koss Corporation (KOSS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding. Sonos, Inc. (SONO) carries a higher beta of 1.52 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (KOSS: +92.1%, SONO: -22.7%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.
07What are the main differences between KOSS and SONO?
Both stocks operate in the Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.
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